Results 31 to 40 of about 5,161,923 (254)

The Fock-space landscape of many-body localisation [PDF]

open access: yesJournal of Physics: Condensed Matter
This article reviews recent progress in understanding the physics of many-body localisation (MBL) in disordered and interacting quantum many-body systems, from the perspective of ergodicity breaking on the associated Fock space.
Sthitadhi Roy, David E Logan
semanticscholar   +1 more source

Percolation in Fock space as a proxy for many-body localization [PDF]

open access: yesPhysical review B, 2018
We study classical percolation models in Fock space as proxies for the quantum many-body localisation (MBL) transition. Percolation rules are defined for two models of disordered quantum spin-chains using their microscopic quantum Hamiltonians and the ...
Sthitadhi Roy, J. Chalker, D. E. Logan
semanticscholar   +1 more source

Multiphoton Jaynes-Cummings Model: Arbitrary Rotations in Fock Space and Quantum Filters. [PDF]

open access: yesPhysical Review Letters, 2018
The multiphoton Jaynes-Cummings model is investigated and applications in quantum information science are explored. Considering the strong atom-field coupling regime and an N-photon interaction, a nonlinear driving field can perform an arbitrary rotation
C. Villas-Boas, D. Z. Rossatto
semanticscholar   +1 more source

Wavelet transforms in generalized Fock spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
A generalized Fock space is introduced as it was developed by Schmeelk [1-5], also Schmeelk and Takači [6-8]. The wavelet transform is then extended to this generalized Fock space.
John Schmeelk, Arpad Takaci
doaj   +1 more source

Linear differential equations with coefficients in Fock type space

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper we deal with complex differential equations of the form \begin{eqnarray*} f^{(k)}+a_{k-1}(z)f^{(k-1)}+\cdot\cdot\cdot+a_{1}(z)f^{'}+a_{0}(z)f=0 \end{eqnarray*} with the coefficients in Fock type space.
Xiang Dong Yang, Jin Tu
doaj   +1 more source

A Hörmander-Fock space

open access: yes, 2022
In a recent paper we used a basic decomposition property of polyanalytic functions of order $2$ in one complex variable to characterize solutions of the classical $\overline{\partial}$-problem for given analytic and polyanalytic data. Our approach suggested the study of a special reproducing kernel Hilbert space that we call the Hörmander-Fock space ...
Alpay, Daniel   +4 more
openaire   +2 more sources

Fourier transforms in generalized Fock spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
A classical Fock space consists of functions of the form,Φ↔(ϕ0,ϕ1,…,ϕq,…),where ϕ0∈C and ϕq∈L2(R3q), q≥1. We will replace the ϕq, q≥1 with q-symmetric rapid descent test functions within tempered distribution theory.
John Schmeelk
doaj   +1 more source

Simple probability distributions on a Fock-space lattice [PDF]

open access: yesJournal of Physics: Condensed Matter, 2018
We consider some aspects of a standard model employed in studies of many-body localization: interacting spinless fermions with quenched disorder, for non-zero filling fraction, here on d-dimensional hypercubic lattices.
S. Welsh, D. E. Logan
semanticscholar   +1 more source

X‐ray magnetic circular dichroism

open access: yesMajor Reference Works, Page 508-515., 2022
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
Gerrit van der Laan C. Chantler   +2 more
wiley  

+1 more source

On the Uniqueness of the Fock Quantization of the Dirac Field in the Closed FRW Cosmology

open access: yesAdvances in Mathematical Physics, 2018
The Fock quantization of free fields propagating in cosmological backgrounds is in general not unambiguously defined due to the nonstationarity of the space-time. For the case of a scalar field in cosmological scenarios, it is known that the criterion of
Jerónimo Cortez   +3 more
doaj   +1 more source

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