Results 11 to 20 of about 426,461 (32)

Overlaps between eigenstates of the XXZ spin-1/2 chain and a class of simple product states

open access: yes, 2014
We consider a class of quantum quenches in the spin-1/2 XXZ chain, where the initial state is of a simple product form. Specific examples are the N\'eel state, the dimer state and the q-deformed dimer state.
Pozsgay, B.
core   +1 more source

Machine learning, quantum chaos, and pseudorandom evolution

open access: yes, 2020
By modeling quantum chaotic dynamics with ensembles of random operators, we explore howmachine learning learning algorithms can be used to detect pseudorandom behavior in qubit systems.We analyze samples consisting of pieces of correlation functions and ...
Alves, Daniel W. F., Flynn, Michael O.
core   +1 more source

Collective effects enhancing power and efficiency [PDF]

open access: yes, 2017
Energy conversion is most efficient for micro or nano machines with tight coupling between input and output power. To reach meaningful amounts of power, ensembles of $N$ such machines must be considered.
Esposito, Massimiliano   +2 more
core   +2 more sources

Short distance correlators in the XXZ spin chain for arbitrary string distributions

open access: yes, 2014
In this letter we consider expectation values of local correlators in highly excited states of the spin-1/2 XXZ chain. Assuming that the string hypothesis holds we formulate the following conjecture: The correlation functions can be computed using the ...
Mestyán, M., Pozsgay, B.
core   +1 more source

Critical domain walls in the Ashkin-Teller model

open access: yes, 2011
We study the fractal properties of interfaces in the 2d Ashkin-Teller model. The fractal dimension of the symmetric interfaces is calculated along the critical line of the model in the interval between the Ising and the four-states Potts models.
Adams D A   +20 more
core   +1 more source

Properties of thermal quantum states: locality of temperature, decay of correlations, and more

open access: yes, 2019
We review several properties of thermal states of spin Hamiltonians with short range interactions. In particular, we focus on those aspects in which the application of tools coming from quantum information theory has been specially successful in the ...
Kliesch, Martin, Riera, Arnau
core   +1 more source

Quantum Statistical Mechanics. III. Equilibrium Probability [PDF]

open access: yesarXiv, 2014
Given are a first principles derivation and formulation of the probabilistic concepts that underly equilibrium quantum statistical mechanics. The transition to non-equilibrium probability is traversed briefly.
arxiv  

Equilibrium Statistical Mechanics [PDF]

open access: yesEncyclopedia of Mathematical Physics, ed. J.P. Francoise, G.L. Naber, Tsou Sheung Tsun, Vol. 1, 51--87, 2006, Elsevier, ISBN:978-0-12-512660-1, 2005
An introductory review of Classical Statistical ...
arxiv  

Computation Speed of the F.A.S.T. Model [PDF]

open access: yes, 2009
The F.A.S.T. model for microscopic simulation of pedestrians was formulated with the idea of parallelizability and small computation times in general in mind, but so far it was never demonstrated, if it can in fact be implemented efficiently for ...
Kretz, Tobias
core  

Frenesy: time-symmetric dynamical activity in nonequilibria

open access: yes, 2019
We review the concept of dynamical ensembles in nonequilibrium statistical mechanics as specified from an action functional or Lagrangian on spacetime.
Maes, Christian
core   +1 more source

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