Zobrazeno 1 - 10
of 2 120
pro vyhledávání: '"Sorella A"'
Anomalous dissipation via spontaneous stochasticity with a two-dimensional autonomous velocity field
We study anomalous dissipation in the context of passive scalars and we construct a two-dimensional autonomous divergence-free velocity field in $C^\alpha$ (with $\alpha \in (0,1)$ arbitrary but fixed) which exhibits anomalous dissipation. Our proof
Externí odkaz:
http://arxiv.org/abs/2409.03599
The Bell-CHSH inequality in the vacuum state of a relativistic scalar quantum field is revisited by making use of the Hilbert space ${\cal H} \otimes {\cal H}_{AB}$, where ${\cal H}$ and ${\cal H}_{AB}$ stand, respectively, for the Hilbert space of t
Externí odkaz:
http://arxiv.org/abs/2407.14636
We study the evolution of a passive scalar subject to molecular diffusion and advected by an incompressible velocity field on a 2D bounded domain. The velocity field is $u = \nabla^\perp H$, where H is an autonomous Hamiltonian whose level sets are J
Externí odkaz:
http://arxiv.org/abs/2407.06884
The Bell-CHSH inequality in the vacuum state of a relativistic scalar quantum field is analyzed. Using Weyl operators built with smeared fields localized in the Rindler wedges, the Bell-CHSH inequality is expressed in terms of the Lorentz invariant i
Externí odkaz:
http://arxiv.org/abs/2406.20033
Publikováno v:
Universe 2024, 10 (8), 307
A study of the spin 1 Unruh-De Witt detectors interacting with a relativistic scalar quantum field is presented. After tracing out the field modes, the resulting density matrix for a bipartite qutrit system is employed to investigate the violation of
Externí odkaz:
http://arxiv.org/abs/2406.04362
Autor:
Sorella, Silvio Paolo
We elaborate on the recent proposal of employing unitary operators in Quantum Mechanics. The Bell and Mermin inequalities for entangled coherent states are scrutinized by making use of the unitary displacement operators. A violation of the Mermin ine
Externí odkaz:
http://arxiv.org/abs/2405.05191
Unitary operators are employed to investigate the violation of the Bell-CHSH inequality. The ensuing modifications affecting both classical and quantum bounds are elucidated. The relevance of a particular class of unitary operators whose expectation
Externí odkaz:
http://arxiv.org/abs/2403.15276
Publikováno v:
J. Chem. Theory Comput. 2024
Diffusion Monte Carlo (DMC) is an exact technique to project out the ground state (GS) of a Hamiltonian. Since the GS is always bosonic, in fermionic systems the projection needs to be carried out while imposing anti-symmetric constraints, which is a
Externí odkaz:
http://arxiv.org/abs/2402.01458
Publikováno v:
J. High Energ. Phys. 2024, 31 (2024)
The interaction between Unruh-De Witt spin $1/2$ detectors and a real scalar field is scrutinized by making use of the Tomita-Takesaki modular theory as applied to the Von Neumann algebra of the Weyl operators. The use of the modular theory enables t
Externí odkaz:
http://arxiv.org/abs/2401.03313
Publikováno v:
Phys. Rev. D 109, 014037 (2024)
We discuss the possibility to obtain a massive Landau gauge, based on the local composite operator (LCO) effective action framework combined with the Zimmerman reduction of couplings prescription. As a way to deal with the gauge ambiguity, we check t
Externí odkaz:
http://arxiv.org/abs/2312.07608