Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Fabian H. L. Essler"'
Autor:
Fabian H. L. Essler, Werner Krauth
Publikováno v:
Physical Review X, Vol 14, Iss 4, p 041035 (2024)
Virtually all Markov-chain Monte Carlo algorithms used for sampling a given distribution are reversible, and they satisfy the detailed-balance condition. For local chains, this leads to a slow, diffusive exploration of sample space. Significant speed
Externí odkaz:
https://doaj.org/article/9959fe90c6fe49319bfd5c191544d178
Publikováno v:
SciPost Physics, Vol 12, Iss 1, p 042 (2022)
We consider the dynamics of fluctuations in the quantum asymmetric simple exclusion process (Q-ASEP) with periodic boundary conditions. The Q-ASEP describes a chain of spinless fermions with random hoppings that are induced by a Markovian environm
Externí odkaz:
https://doaj.org/article/a6df03377d094da2a74005305e87ad37
Publikováno v:
SciPost Physics, Vol 11, Iss 3, p 068 (2021)
We consider the time evolution of local observables after an interaction quench in the repulsive Lieb-Liniger model. The system is initialized in the ground state for vanishing interaction and then time-evolved with the Lieb-Liniger Hamiltonian fo
Externí odkaz:
https://doaj.org/article/6f5090ed1426479d9b9319a8b2b55df4
The description of solids at a microscopic level is complex, involving the interaction of a huge number of its constituents, such as ions or electrons. It is impossible to solve the corresponding many-body problems analytically or numerically, althou
Publikováno v:
SciPost Physics, Vol 9, Iss 6, p 082 (2020)
We introduce a framework for calculating dynamical correlations in the Lieb-Liniger model in arbitrary energy eigenstates and for all space and time, that combines a Lehmann representation with a $1/c$ expansion. The $n^{\rm th}$ term of the expansio
Externí odkaz:
https://doaj.org/article/d68e327c690445e1bceae1ef0c5ccfdc
Publikováno v:
SciPost Physics, Vol 9, Iss 3, p 033 (2020)
We consider the problems of calculating the dynamical order parameter two-point function at finite temperatures and the one-point function after a quantum quench in the transverse field Ising chain. Both of these can be expressed in terms of form
Externí odkaz:
https://doaj.org/article/8df284df790246f4bf3e3eef049d512e
Publikováno v:
SciPost Physics, Vol 9, Iss 2, p 025 (2020)
We consider a model of two tunnel-coupled one-dimensional Bose gases with hard-wall boundary conditions. Bosonizing the model and retaining only the most relevant interactions leads to a decoupled theory consisting of a quantum sine-Gordon model and
Externí odkaz:
https://doaj.org/article/ecf80803efe34ca9a92c12804f503dfb
Autor:
Satoshi Ejima, Tomoki Yamaguchi, Fabian H. L. Essler, Florian Lange, Yukinori Ohta, Holger Fehske
Publikováno v:
SciPost Physics, Vol 5, Iss 6, p 059 (2018)
We consider the dimerized spin-1 $XXZ$ chain with single-ion anisotropy $D$. In absence of an explicit dimerization there are three phases: a large-$D$, an antiferromagnetically ordered and a Haldane phase. This phase structure persists up to a cr
Externí odkaz:
https://doaj.org/article/966a5c4ad4c64d768e75f8932bd88a3c
Publikováno v:
Physical review letters. 128(19)
We consider fermions defined on a continuous one-dimensional interval and subject to weak repulsive two-body interactions. We show that it is possible to perturbatively construct an extensive number of mutually compatible conserved charges for any in
Publikováno v:
SciPost Physics, Vol 5, Iss 5, p 046 (2018)
We consider time-of-flight measurements in split one-dimensional Bose gases. It is well known that the low-energy sector of such systems can be described in terms of two compact phase fields $\hat{\phi}_{a,s}(x)$. Building on existing results in t
Externí odkaz:
https://doaj.org/article/ef3754fe06be4528a9ac1521ab93a725