Zobrazeno 1 - 10
of 184
pro vyhledávání: '"Srednicki, Mark"'
Autor:
Iniguez, Fernando, Srednicki, Mark
We consider the properties of an observable (such as a single spin component that squares to the identity) when expressed as a matrix in the basis of energy eigenstates, and then truncated to a microcanonical slice of energies of varying width. For a
Externí odkaz:
http://arxiv.org/abs/2305.15702
Autor:
Iniguez, Fernando, Srednicki, Mark
The quantum Fisher information (QFI) associated with a particular process applied to a many-body quantum system has been suggested as a diagnostic for the nature of the system's quantum state, e.g., a thermal density matrix vs. a pure state in a syst
Externí odkaz:
http://arxiv.org/abs/2304.01657
Autor:
Murthy, Chaitanya, Babakhani, Arman, Iniguez, Fernando, Srednicki, Mark, Halpern, Nicole Yunger
Publikováno v:
Phys. Rev. Lett. 130, 140402 (2023)
The eigenstate thermalization hypothesis (ETH) explains why chaotic quantum many-body systems thermalize internally if the Hamiltonian lacks symmetries. If the Hamiltonian conserves one quantity ("charge"), the ETH implies thermalization within a cha
Externí odkaz:
http://arxiv.org/abs/2206.05310
Autor:
Ish, Daniel, Srednicki, Mark
Through a mixture of analytic and numerical techniques, we explore the optimal approximation by a free Majorana state to individual disorder realizations of the Sachdev-Ye-Kitaev model, along with a generalization of it. We elucidate the properties o
Externí odkaz:
http://arxiv.org/abs/2006.00728
Autor:
Murthy, Chaitanya, Srednicki, Mark
Publikováno v:
Phys. Rev. Lett. 123, 230606 (2019)
We show that the known bound on the growth rate of the out-of-time-order four-point correlator in chaotic many-body quantum systems follows directly from the general structure of operator matrix elements in systems that obey the eigenstate thermaliza
Externí odkaz:
http://arxiv.org/abs/1906.10808
Autor:
Murthy, Chaitanya, Srednicki, Mark
Publikováno v:
Phys. Rev. E 100, 022131 (2019)
We consider a chaotic many-body system (i.e., one that satisfies the eigenstate thermalization hypothesis) that is split into two subsystems, with an interaction along their mutual boundary, and study the entanglement properties of an energy eigensta
Externí odkaz:
http://arxiv.org/abs/1906.04295
Autor:
Murthy, Chaitanya, Srednicki, Mark
Publikováno v:
Phys. Rev. E 100, 012146 (2019)
We present an elementary, general, and semi-quantitative description of relaxation to gaussian and generalized Gibbs states in lattice models of fermions or bosons with quadratic hamiltonians. Our arguments apply to arbitrary initial states that sati
Externí odkaz:
http://arxiv.org/abs/1809.03681
Publikováno v:
Phys. Rev. E 97, 062213 (2018)
We investigate both the classical and quantum dynamics for a simple kicked system (the standard map) that classically has mixed phase space. For initial conditions in a portion of the chaotic region that is close enough to the regular region, the phe
Externí odkaz:
http://arxiv.org/abs/1803.04149
Autor:
Michel, Ben, Srednicki, Mark
Calculations of the entanglement entropy of a spatial region in continuum quantum field theory require boundary conditions on the fields at the fictitious boundary of the region. These boundary conditions impact the treatment of the zero modes of the
Externí odkaz:
http://arxiv.org/abs/1612.08682
Autor:
Fratus, Keith R., Srednicki, Mark
We study eigenstate thermalization and related signatures of quantum chaos in the one-dimensional ferromagnetic transverse-field Ising model with power-law interactions. The presence of long-range interactions allows for a finite-temperature phase tr
Externí odkaz:
http://arxiv.org/abs/1611.03992