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Duclut C, Bo S, Lier R, Armas J, Surówka P, Jülicher F. Probe particles in odd active viscoelastic fluids: How activity and dissipation determine linear stability. Phys Rev E 2024; 109:044126. [PMID: 38755925 DOI: 10.1103/physreve.109.044126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/14/2024] [Indexed: 05/18/2024]
Abstract
Odd viscoelastic materials are constrained by fewer symmetries than their even counterparts. The breaking of these symmetries allows these materials to exhibit different features, which have attracted considerable attention in recent years. Immersing a bead in such complex fluids allows for probing their physical properties, highlighting signatures of their oddity and exploring the consequences of these broken symmetries. We present the conditions under which the activity of an odd viscoelastic fluid can give rise to linear instabilities in the motion of the probe particle, and we unveil how the features of the probe particle dynamics depend on the oddity and activity of the viscoelastic medium in which it is immersed.
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Affiliation(s)
- Charlie Duclut
- Laboratoire Physique des Cellules et Cancer (PCC), CNRS UMR 168, Institut Curie, Université PSL, Sorbonne Université, 75005 Paris, France
- Université Paris Cité, Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 CNRS, F-75205 Paris, France
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
| | - Stefano Bo
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Department of Physics, King's College London, London WC2R 2LS, United Kingdom
| | - Ruben Lier
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
| | - Jay Armas
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
| | - Piotr Surówka
- Department of Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstrasse 108, 01307 Dresden, Germany
- Cluster of Excellence Physics of Life, TU Dresden, 01307 Dresden, Germany
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Surówka P, Souslov A, Jülicher F, Banerjee D. Odd Cosserat elasticity in active materials. Phys Rev E 2023; 108:064609. [PMID: 38243431 DOI: 10.1103/physreve.108.064609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 11/16/2023] [Indexed: 01/21/2024]
Abstract
Stress-strain constitutive relations in solids with an internal angular degree of freedom can be modeled using Cosserat (also called micropolar) elasticity. In this paper, we explore Cosserat materials that include chiral active components and hence odd elasticity. We calculate static elastic properties and show that the static response to rotational stresses leads to strains that depend on both Cosserat and odd elasticity. We compute the dispersion relations in odd Cosserat materials in the overdamped regime and find the presence of exceptional points. These exceptional points create a sharp boundary between a Cosserat-dominated regime of complete wave attenuation and an odd-elasticity-dominated regime of propagating waves. We conclude by showing the effect of Cosserat and odd-elasticity terms on the polarization of Rayleigh surface waves.
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Affiliation(s)
- Piotr Surówka
- Institute of Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, 01187 Dresden, Germany
| | - Anton Souslov
- Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
- Cluster of Excellence Physics of Life, TU Dresden, 01062 Dresden, Germany
| | - Debarghya Banerjee
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
- Institute for Theoretical Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Lier R, Duclut C, Bo S, Armas J, Jülicher F, Surówka P. Lift force in odd compressible fluids. Phys Rev E 2023; 108:L023101. [PMID: 37723786 DOI: 10.1103/physreve.108.l023101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/07/2023] [Indexed: 09/20/2023]
Abstract
When a body moves through a fluid, it can experience a force orthogonal to its movement called lift force. Odd viscous fluids break parity and time-reversal symmetry, suggesting the existence of an odd lift force on tracer particles, even at vanishing Reynolds numbers and for symmetric geometries. It was previously found that an incompressible odd fluid cannot induce lift force on a tracer particle with no-slip boundary conditions, making signatures of odd viscosity in the two-dimensional bulk elusive. By computing the response matrix for a tracer particle, we show that an odd compressible fluid can produce an odd lift force. Using shell localization, we provide analytic expressions for the drag and odd lift forces acting on the tracer particle in a steady state and also at finite frequency. Importantly, we find that the existence of an odd lift force in a steady state requires taking into account the nonconservation of the fluid mass density due to the coupling between the two-dimensional surface and the three-dimensional bulk fluid.
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Affiliation(s)
- Ruben Lier
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, 01187 Dresden, Germany
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
| | - Charlie Duclut
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Laboratoire Physico-Chimie Curie, UMR 168, Institut Curie, PSL Research University, CNRS, Sorbonne Université, 75005 Paris, France
- Université Paris Cité, Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 CNRS, F-75205 Paris, France
| | - Stefano Bo
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Department of Physics, King's College London, London WC2R 2LS, United Kingdom
| | - Jay Armas
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstrasse 108, 01307 Dresden, Germany
- Cluster of Excellence Physics of Life, TU Dresden, 01062 Dresden, Germany
| | - Piotr Surówka
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Institute of Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
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Głódkowski A, Peña-Benítez F, Surówka P. Hydrodynamics of dipole-conserving fluids. Phys Rev E 2023; 107:034142. [PMID: 37072973 DOI: 10.1103/physreve.107.034142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/15/2023] [Indexed: 04/20/2023]
Abstract
Dipole-conserving fluids serve as examples of kinematically constrained systems that can be understood on the basis of symmetry. They are known to display various exotic features including glassylike dynamics, subdiffusive transport, and immobile excitations' dubbed fractons. Unfortunately, such systems have so far escaped a complete macroscopic formulation as viscous fluids. In this work, we construct a consistent hydrodynamic description for fluids invariant under translation, rotation, and dipole shift symmetry. We use symmetry principles to formulate a thermodynamic theory for dipole-conserving systems at equilibrium and apply irreversible thermodynamics in order to elucidate dissipative effects. Remarkably, we find that the inclusion of the energy conservation not only renders the longitudinal modes diffusive rather than subdiffusive but also diffusion is present even at the lowest order in the derivative expansion. This work paves the way towards an effective description of many-body systems with constrained dynamics such as ensembles of topological defects, fracton phases of matter, and certain models of glasses.
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Affiliation(s)
- Aleksander Głódkowski
- Institute for Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
| | - Francisco Peña-Benítez
- Institute for Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
| | - Piotr Surówka
- Institute for Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
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Abstract
Active chiral viscoelastic materials exhibit elastic responses perpendicular to the applied stresses, referred to as odd elasticity. We use a covariant formulation of viscoelasticity combined with an entropy production analysis to show that odd elasticity is not only present in active systems but also in broad classes of passive chiral viscoelastic fluids. In addition, we demonstrate that linear viscoelastic chiral solids require activity in order to manifest odd elastic responses. To model the phenomenon of passive odd viscoelasticity we propose a chiral extension of Jeffreys model. We apply our covariant formalism in order to derive the dispersion relations of hydrodynamic modes and obtain clear imprints of odd viscoelastic behavior.
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Affiliation(s)
- Ruben Lier
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, 01187 Dresden, Germany
| | - Jay Armas
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
| | - Stefano Bo
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
| | - Charlie Duclut
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Cluster of Excellence Physics of Life, TU Dresden, 01062 Dresden, Germany
| | - Piotr Surówka
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Institute for Theoretical Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Dutch Institute for Emergent Phenomena (DIEP), University of Amsterdam, 1090 GL Amsterdam, The Netherlands
- Department of Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
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Banerjee D, Vitelli V, Jülicher F, Surówka P. Erratum: Active Viscoelasticity of Odd Materials [Phys. Rev. Lett. 126, 138001 (2021)]. Phys Rev Lett 2021; 127:189901. [PMID: 34767434 DOI: 10.1103/physrevlett.127.189901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Indexed: 06/13/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.126.138001.
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Zhang SB, Li CA, Peña-Benitez F, Surówka P, Moessner R, Molenkamp LW, Trauzettel B. Super-Resonant Transport of Topological Surface States Subjected to In-Plane Magnetic Fields. Phys Rev Lett 2021; 127:076601. [PMID: 34459623 DOI: 10.1103/physrevlett.127.076601] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/19/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Magnetic oscillations of Dirac surface states of topological insulators are typically expected to be associated with the formation of Landau levels or the Aharonov-Bohm effect. We instead study the conductance of Dirac surface states subjected to an in-plane magnetic field in the presence of a barrier potential. Strikingly, we find that, in the case of large barrier potentials, the surface states exhibit pronounced oscillations in the conductance when varying the magnetic field, in the absence of Landau levels or the Aharonov-Bohm effect. These novel magnetic oscillations are attributed to the emergence of super-resonant transport by tuning the magnetic field, in which many propagating modes cross the barrier with perfect transmission. In the case of small and moderate barrier potentials, we identify a positive magnetoconductance due to the increase of the Fermi surface by tilting the surface Dirac cone. Moreover, we show that for weak magnetic fields, the conductance displays a shifted sinusoidal dependence on the field direction with period π and phase shift determined by the tilting direction with respect to the field direction. Our predictions can be applied to various topological insulators, such as HgTe and Bi_{2}Se_{3}, and provide important insights into exploring and understanding exotic magnetotransport properties of topological surface states.
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Affiliation(s)
- Song-Bo Zhang
- Institut für Theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany
| | - Chang-An Li
- Institut für Theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany
| | - Francisco Peña-Benitez
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, Germany
| | - Piotr Surówka
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, Germany
- Department of Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
| | - Roderich Moessner
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, Germany
| | - Laurens W Molenkamp
- Würzburg-Dresden Cluster of Excellence ct.qmat, Germany
- Physikalisches Institut (EP3), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Institute for Topological Insulators, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
| | - Björn Trauzettel
- Institut für Theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany
- Würzburg-Dresden Cluster of Excellence ct.qmat, Germany
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Banerjee D, Vitelli V, Jülicher F, Surówka P. Active Viscoelasticity of Odd Materials. Phys Rev Lett 2021; 126:138001. [PMID: 33861116 DOI: 10.1103/physrevlett.126.138001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
The mechanical response of active media ranging from biological gels to living tissues is governed by a subtle interplay between viscosity and elasticity. We generalize the canonical Kelvin-Voigt and Maxwell models to active viscoelastic media that break both parity and time-reversal symmetries. The resulting continuum theories exhibit viscous and elastic tensors that are both antisymmetric, or odd, under exchange of pairs of indices. We analyze how these parity violating viscoelastic coefficients determine the relaxation mechanisms and wave-propagation properties of odd materials.
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Affiliation(s)
- Debarghya Banerjee
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
| | - Vincenzo Vitelli
- James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
- Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA
- Kadanoff Center for Theoretical Physics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Cluster of Excellence Physics of Life, TU Dresden, 01062 Dresden, Germany
| | - Piotr Surówka
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
- Department of Theoretical Physics, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
- Würzburg-Dresden Cluster of Excellence ct.qmat, Germany
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Kovalev S, Dantas RMA, Germanskiy S, Deinert JC, Green B, Ilyakov I, Awari N, Chen M, Bawatna M, Ling J, Xiu F, van Loosdrecht PHM, Surówka P, Oka T, Wang Z. Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd 3As 2. Nat Commun 2020; 11:2451. [PMID: 32415119 PMCID: PMC7229177 DOI: 10.1038/s41467-020-16133-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/09/2020] [Indexed: 11/08/2022] Open
Abstract
Harmonic generation is a general characteristic of driven nonlinear systems, and serves as an efficient tool for investigating the fundamental principles that govern the ultrafast nonlinear dynamics. Here, we report on terahertz-field driven high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2 at room temperature. Excited by linearly-polarized multi-cycle terahertz pulses, the third-, fifth-, and seventh-order harmonic generation is very efficient and detected via time-resolved spectroscopic techniques. The observed harmonic radiation is further studied as a function of pump-pulse fluence. Their fluence dependence is found to deviate evidently from the expected power-law dependence in the perturbative regime. The observed highly non-perturbative behavior is reproduced based on our analysis of the intraband kinetics of the terahertz-field driven nonequilibrium state using the Boltzmann transport theory. Our results indicate that the driven nonlinear kinetics of the Dirac electrons plays the central role for the observed highly nonlinear response.
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Affiliation(s)
| | - Renato M A Dantas
- Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
| | | | | | - Bertram Green
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Igor Ilyakov
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Nilesh Awari
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Min Chen
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | | | - Jiwei Ling
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing, China
| | - Faxian Xiu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing, China
| | | | - Piotr Surówka
- Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
| | - Takashi Oka
- Max Planck Institute for the Physics of Complex Systems, Dresden, Germany.
- Max Planck Institute for Chemical Physics of Solids, Dresden, Germany.
| | - Zhe Wang
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.
- Institute of Physics II, University of Cologne, Cologne, Germany.
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Lucas A, Surówka P. Phenomenology of nonrelativistic parity-violating hydrodynamics in 2+1 dimensions. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 90:063005. [PMID: 25615185 DOI: 10.1103/physreve.90.063005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Indexed: 06/04/2023]
Abstract
Parity-violating fluids in two spatial dimensions can appear in a variety of contexts such as liquid crystal films, anyon fluids, and quantum Hall fluids. Nonetheless, the consequences of parity violation on the solutions to the equations of motion are largely unexplored. In this paper, we explore phenomenological consequences of parity violation through simple, illustrative examples. Although incompressible velocity fields are essentially unchanged by parity violation, we discuss examples where parity violation plays a role at boundaries, or in the dynamics of temperature. We then discuss types of compressible flows which only exist in a parity-violating fluid, including sound waves, and solitons in the dissipationless limit. We conclude with a discussion of some curious features in Rayleigh-Bénard convection of a parity-violating fluid.
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Affiliation(s)
- Andrew Lucas
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Piotr Surówka
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA and Center for the Fundamental Laws of Nature, Harvard University, Cambridge, Massachusetts 02138, USA
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Abstract
We consider the hydrodynamic regime of theories with quantum anomalies for global currents. We show that a hitherto discarded term in the conserved current is not only allowed by symmetries, but is in fact required by triangle anomalies and the second law of thermodynamics. This term leads to a number of new effects, one of which is chiral separation in a rotating fluid at nonzero chemical potential. The new kinetic coefficients can be expressed, in a unique fashion, through the anomaly coefficients and the equation of state. We briefly discuss the relevance of this new hydrodynamic term for physical situations, including heavy-ion collisions.
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Affiliation(s)
- Dam T Son
- Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195-1550, USA
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12
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Heller MP, Surówka P, Loganayagam R, Spaliński M, Vázquez SE. Consistent holographic description of boost-invariant plasma. Phys Rev Lett 2009; 102:041601. [PMID: 19257411 DOI: 10.1103/physrevlett.102.041601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Revised: 11/13/2008] [Indexed: 05/27/2023]
Abstract
Prior attempts to construct the gravity dual of boost-invariant flow of N=4 supersymmetric Yang-Mills gauge theory plasma suffered from apparent curvature singularities in the late-time expansion. This Letter shows how these problems can be resolved by a different choice of expansion parameter. The calculations presented correctly reproduce the plasma energy-momentum tensor within the framework of second-order viscous hydrodynamics.
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Affiliation(s)
- Michal P Heller
- Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Cracow, Poland.
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