Zobrazeno 1 - 10
of 325
pro vyhledávání: '"Berges, J. A."'
Autor:
Berges, J.
I review developments of how compact table-top setups with ultracold atoms can help us to understand the more complex real-time dynamics of QCD probed in heavy-ion collision experiments.
Comment: Proceedings for Quark Matter 2023 plenary talk
Comment: Proceedings for Quark Matter 2023 plenary talk
Externí odkaz:
http://arxiv.org/abs/2312.10673
Autor:
Spitz, D., Berges, J.
Publikováno v:
Phys. Rev. D 99, 036020 (2019)
Far-from-equilibrium dynamics of SU(2) gauge theory with Wilson fermions is studied in 1+1 space-time dimensions using a real-time lattice approach. Lattice improved Hamiltonians are shown to be very efficient in simulating Schwinger pair creation an
Externí odkaz:
http://arxiv.org/abs/1812.05835
Autor:
Orioli, A. Piñeiro, Berges, J.
Publikováno v:
Phys. Rev. Lett. 122, 150401 (2019)
Universal phenomena far from equilibrium exhibit additional independent scaling exponents and functions as compared to thermal universal behavior. For the example of an ultracold Bose gas we simulate nonequilibrium transport processes in a universal
Externí odkaz:
http://arxiv.org/abs/1810.12392
Publikováno v:
Phys. Rev. Lett. 122, 050403 (2019)
Aiming at a better understanding of anomalous and topological effects in gauge theories out-of-equilibrium, we study the real-time dynamics of a prototype model for CP-violation, the massive Schwinger model with a $\theta$-term. We identify dynamical
Externí odkaz:
http://arxiv.org/abs/1808.07885
Publikováno v:
Phys. Rev. B 98, 224304 (2018)
We present a non-equilibrium quantum field theory approach to the initial-state dynamics of spin models based on two-particle irreducible (2PI) functional integral techniques. It employs a mapping of spins to Schwinger bosons for arbitrary spin inter
Externí odkaz:
http://arxiv.org/abs/1806.02347
Publikováno v:
Nature 563, 225 (2018)
We provide experimental evidence of universal dynamics far from equilibrium during the relaxation of an isolated one-dimensional Bose gas. Following a rapid cooling quench, the system exhibits universal scaling in time and space, associated with the
Externí odkaz:
http://arxiv.org/abs/1805.12310
Autor:
Kamil, E., Berges, J., Schönhoff, G., Rösner, M., Schüler, M., Sangiovanni, G., Wehling, T. O.
Publikováno v:
E Kamil et al 2018 J. Phys.: Condens. Matter 30 325601
Using ab-initio calculations we reveal the nature of the insulating phase recently found experimentally in monolayer 1T-NbSe$_2$. We find soft phonon modes in a large parts of the Brillouin zone indicating the strong-coupling nature of a charge-densi
Externí odkaz:
http://arxiv.org/abs/1804.03898
Plasmonic excitations behave fundamentally different in layered materials in comparison to bulk systems. They form gapless modes, which in turn couple at low energies to the electrons. Thereby they can strongly influence superconducting instabilities
Externí odkaz:
http://arxiv.org/abs/1803.04576
Publikováno v:
Quantum Sci. Technol. 3 034010 (2018)
Quantum simulators have the exciting prospect of giving access to real-time dynamics of lattice gauge theories, in particular in regimes that are difficult to compute on classical computers. Future progress towards scalable quantum simulation of latt
Externí odkaz:
http://arxiv.org/abs/1802.06704
Publikováno v:
Phys. Rev. D 97, 116011 (2018)
We consider an effective kinetic description for quantum many-body systems, which is not based on a weak-coupling or diluteness expansion. Instead, it employs an expansion in the number of field components N of the underlying scalar quantum field the
Externí odkaz:
http://arxiv.org/abs/1710.11146