Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Hummel, Quirin"'
The notion of many-body quantum scars is associated with special eigenstates, usually concentrated in certain parts of Hilbert space, that give rise to robust persistent oscillations in a regime that globally exhibits thermalization. Here we extend t
Externí odkaz:
http://arxiv.org/abs/2212.12046
Autor:
Hummel, Quirin, Schlagheck, Peter
Although highly successful, the Truncated Wigner Approximation (TWA) does not account for genuine many-body quantum interference between different solutions of the mean-field equations of a bosonic many-body (MB) system. This renders the TWA essentia
Externí odkaz:
http://arxiv.org/abs/2202.04596
Publikováno v:
Phys. Rev. Lett. 122, 240601 (2019)
Due to the vast growth of the many-body level density with excitation energy, its smoothed form is of central relevance for spectral and thermodynamic properties of interacting quantum systems. We compute the cumulative of this level density for conf
Externí odkaz:
http://arxiv.org/abs/1902.08674
Publikováno v:
Phys. Rev. Lett. 123, 160401 (2019)
Quantum chaotic interacting $N$-particle systems are assumed to show fast and irreversible spreading of quantum information on short (Ehrenfest) time scales $\sim\!\log N$. Here we show that, near criticality, certain many-body systems exhibit fast i
Externí odkaz:
http://arxiv.org/abs/1812.09237
Publikováno v:
Phys. Rev. A 97, 063612 (2018)
We present analytical results for the nonlocal pair correlations in one-dimensional bosonic systems with repulsive contact interactions that are uniformly valid from the classical regime of high temperatures down to weak quantum degeneracy entering t
Externí odkaz:
http://arxiv.org/abs/1801.07666
Publikováno v:
Phys. Rev. E 96, 022204 (2017)
We present a semiclassical study of the spectrum of a few-body system consisting of two short-range interacting bosonic particles in one dimension, a particular case of a general class of integrable many-body systems where the energy spectrum is give
Externí odkaz:
http://arxiv.org/abs/1705.09637
We address the fundamental interplay between indistinguishability and interactions when discreteness effects are neglected in systems with strictly fixed number of particles. For this end we supplement cluster expansions (many-body canonical techniqu
Externí odkaz:
http://arxiv.org/abs/1603.02775
We show that a theory of complex scattering between many-body (Fock) states can be constructed such that its classical limit is a canonical transformation thus encoding quantum interference in the semiclassical form of the associated unitary operator
Externí odkaz:
http://arxiv.org/abs/1502.07483
Publikováno v:
Phys. Rev. Lett. 116, 100401 (2016)
The interplay between single-particle interference and quantum indistinguishability leads to signature correlations in many-body scattering. We uncover these with a semiclassical calculation of the transmission probabilities through mesoscopic caviti
Externí odkaz:
http://arxiv.org/abs/1409.1558
Publikováno v:
Phys. Rev. Lett 112, 070406 (2014)
One of the most famous problems in mathematics is the Riemann hypothesis: that the non-trivial zeros of the Riemann zeta function lie on a line in the complex plane. One way to prove the hypothesis would be to identify the zeros as eigenvalues of a H
Externí odkaz:
http://arxiv.org/abs/1307.6055