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6 papers · 2 filters
Oscillators with imaginary coupling: spectral functions in quantum mechanics and quantum field theory
Bruno W. Mintz, Itai Y. Pinheiro, Rui Aquino
The axioms of Quantum Mechanics require that the hamiltonian of any closed system is self-adjoint, so that energy levels are real and time evolution preserves probability. On the o…
Bell-CHSH inequality and unitary transformations in Quantum Field Theory
D. O. R. Azevedo, F. M. Guedes, M. S. Guimaraes +3
Unitary transformations are employed to enhance the violations of the Bell-CHSH inequality in relativistic Quantum Field Theory. The case of the scalar field in Minkowski spa…
Bell's inequality in relativistic Quantum Field Theory
M. S. Guimaraes, I. Roditi, S. P. Sorella
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…
Introduction to Bell's inequality in Quantum Mechanics
M. S. Guimaraes, I. Roditi, S. P. Sorella
A pedagogical introduction to Bell's inequality in Quantum Mechanics is presented. Several examples, ranging from spin to coherent and squeezed states are worked out. The gen…
Emergent broadband polarization entanglement from electronic and phononic Stokes-anti-Stokes indistinguishability
Diego Sier, Lucas Valente, Tiago A. Freitas +4
Recently [PRA 108, L051501 (2023)], it was shown that in a centrosymmetric cubic system, two photons from a broadband intense laser field can be converted into a pair of Stokes and…
The Casimir-Lifshitz formula for rectangular dielectric waveguide
E. Arias, G. O. Heymans, N. F. Svaiter
We analyze the Casimir-Lifshitz effect associated with the electromagnetic field in the presence of a rectangular waveguide consisting of two distinct dielectric materials in a $(3…