Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Guimaraes, M. S."'
A concise and self-contained introduction to the Bell inequality in relativistic Quantum Field Theory is presented. Taking the example of a real scalar massive field, the violation of the Bell inequality in the vacuum state and for causal complementa
Externí odkaz:
http://arxiv.org/abs/2410.19101
A pedagogical introduction to Bell's inequality in Quantum Mechanics is presented. Several examples, ranging from spin $1/2$ to coherent and squeezed states are worked out. The generalization to Mermin's inequalities and to GHZ states is also outline
Externí odkaz:
http://arxiv.org/abs/2409.07597
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
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
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:
Phys. Rev. D 108, 085026 (2023)
The violation of the Bell-CHSH inequality in the vacuum state of a relativistic free real scalar field is established by means of the Tomita-Takesaki construction and of the direct computation of the correlation functions of Weyl operators.
Comm
Comm
Externí odkaz:
http://arxiv.org/abs/2309.02941
Publikováno v:
Phys. Rev. B 103, 165120 (2021)
The theory of massive photons in the presence of axions is studied as the effective theory describing the electromagnetic response of semimetals when a particular quartic fermionic pairing perturbation triggers the formation of charged chiral condens
Externí odkaz:
http://arxiv.org/abs/2012.00184
The spectral properties of a set of local gauge (BRST) invariant composite operators are investigated in the $SU(2)$ Yang--Mills--Higgs model with a single Higgs field in the fundamental representation, quantized in the 't Hooft $R_{\xi}$-gauge. Thes
Externí odkaz:
http://arxiv.org/abs/2008.07813
Autor:
Dudal, D., van Egmond, D. M., Guimaraes, M. S., Holanda, O., Mintz, B. W., Palhares, L. F., Peruzzo, G., Sorella, S. P.
Publikováno v:
Phys. Rev. D 100, 065009 (2019)
We consider the unitary Abelian Higgs model and investigate its spectral functions at one-loop order. This analysis allows to disentangle what is physical and what is not at the level of the elementary particle propagators, in conjunction with the Ni
Externí odkaz:
http://arxiv.org/abs/1905.10422
Publikováno v:
Annals of Physics 419, 168245 (2020)
In this work, we investigate the role of multivalued fields in the formulation of monopole operators and their connection with topological states of matter. In quantum field theory it is known that certain states describe collective modes of the fund
Externí odkaz:
http://arxiv.org/abs/1812.01705