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pro vyhledávání: '"Kirkpatrick, T. A."'
The Random First Order Transition Theory (RFOT) predicts that transport proceeds by cooperative movement of particles in domains whose sizes increase as a liquid is compressed above a characteristic volume fraction, $\phi_d$. The rounded dynamical tr
Externí odkaz:
http://arxiv.org/abs/2409.19372
Autor:
Kirkpatrick, T. R., Belitz, D.
Long-time tails, or algebraic decay of time-correlation functions, have long been known to exist both in many-body systems and in models of non-interacting particles in the presence of quenched disorder that are often referred to as Lorentz models. I
Externí odkaz:
http://arxiv.org/abs/2409.08123
Autor:
Kirkpatrick, T. R., Belitz, D.
We use dynamic equations to derive a relation between correlation functions and response or relaxation functions in many-body systems. The relation is very general and holds both in equilibrium, when the usual fluctuation-dissipation theorem is valid
Externí odkaz:
http://arxiv.org/abs/2407.01821
Autor:
Kirkpatrick, T. R., Belitz, D.
The absence of a simple fluctuation-dissipation theorem is a major obstacle for studying systems that are not in thermodynamic equilibrium. We show that for a fluid in a non-equilibrium steady state characterized by a constant temperature gradient th
Externí odkaz:
http://arxiv.org/abs/2401.10414
Autor:
Kirkpatrick, T. R., Belitz, D.
Publikováno v:
Phys. Rev. Lett. 131, 244001 (2023)_
There is no simple fluctuation-dissipation theorem (FDT) for nonequilibrium systems. We show that for a fluid in a nonequilibrium steady state (NESS) characterized by a constant temperature gradient there is a generalized FDT that relates commutator
Externí odkaz:
http://arxiv.org/abs/2305.06406
Autor:
Kirkpatrick, T. R., Belitz, D.
Publikováno v:
Eur. Phys. J. Spec. Top. 232, 3495 (2023)
We consider a fermionic fluid in a non-equilibrium steady state where the fluctuation-dissipation theorem is not valid and fields conjugate to the hydrodynamic variables are explicitly required to determine response functions. We identify velocity-de
Externí odkaz:
http://arxiv.org/abs/2304.06157
The complex spatiotemporal flow patterns in living tissues, driven by active forces, have many of the characteristics associated with inertial turbulence even though the Reynolds number is extremely low. Analyses of experimental data from two-dimensi
Externí odkaz:
http://arxiv.org/abs/2211.14410
A recent experiment on zebrafish blastoderm morphogenesis showed that the viscosity of the non-confluent embryonic tissue grows sharply until a critical cell density, and is a constant as the density is increased further. The increase in the viscosit
Externí odkaz:
http://arxiv.org/abs/2211.14242
Publikováno v:
Phys. Rev. B 106, 125105 (2022)
We discuss contributions to the thermopower in an electron fluid. A simple argument based on Newton's second law with the pressure gradient as the force suggests that the thermopower is given by a thermodynamic derivative, viz., the entropy per parti
Externí odkaz:
http://arxiv.org/abs/2205.06362
Autor:
Kirkpatrick, T. R., Belitz, D.
Publikováno v:
Phys. Rev. B 105, 245147 (2022)
We consider a quantum Langevin kinetic equation for a system of fermions. We first derive the Langevin force noise correlation functions in Landau's Fermi-liquid kinetic theory from general considerations. We then use the resulting equation to calcul
Externí odkaz:
http://arxiv.org/abs/2203.05521