Zobrazeno 1 - 10
of 133
pro vyhledávání: '"De Lorenci, V. A."'
An isolated pulsar is a rotating neutron star possessing a high magnetic dipole moment that generally makes a finite angle with its rotation axis. As a consequence, the emission of magnetic dipole radiation (MDR) continuously takes away its rotationa
Externí odkaz:
http://arxiv.org/abs/2302.13322
Autor:
Ribeiro, C. C. H., De Lorenci, V. A.
The second quantization of a real massless scalar field in the presence of a material medium described by a Drude-like susceptibility is here examined in a 1+1 dimensional model. The modified vacuum fluctuations of this field imprint divergence-free
Externí odkaz:
http://arxiv.org/abs/2301.07800
Autor:
De Lorenci, V. A., de Paula, L. T.
Formal analogies between gravitational and optical phenomena have been subject of study for over a century, leading to interesting scenarios for testing kinematic aspects of general relativity in terrestrial laboratories. Here, some aspects about ana
Externí odkaz:
http://arxiv.org/abs/2205.05149
Publikováno v:
Annals of Physics 455 (2023) 169375
The quantum Brownian motion of a single neutral particle with nonzero electric dipole moment placed in a photon gas at fixed temperature and close to a conducting wall is here examined. The interaction of the particle with the photon field leads to q
Externí odkaz:
http://arxiv.org/abs/2110.12955
Publikováno v:
Eur. Phys. J. C (2021) 81:424
The fundamental vacuum state of quantum fields, related to Minkowski space, produces divergent fluctuations that must be suppressed in order to bring reality to the description of physical systems. As a consequence, negative vacuum expectation values
Externí odkaz:
http://arxiv.org/abs/2010.07146
Publikováno v:
Phys. Rev. D 100, 065014 (2019)
When the vacuum state of a scalar or electromagnetic field is modified by the presence of a reflecting boundary, an interacting test particle undergoes velocity fluctuations. Such effect is regarded as a sort of quantum analog of the classical Browni
Externí odkaz:
http://arxiv.org/abs/1906.08322
Autor:
De Lorenci, V. A., Ford, L. H.
Publikováno v:
Phys. Rev. A 100, 013819 (2019)
The influence of quantum fluctuations of the electromagnetic field on the propagation of a polarized light wave in a nonlinear dielectric is investigated. It is shown that in some cases, the fluctuations couple to the optical nonlinearities of the me
Externí odkaz:
http://arxiv.org/abs/1903.11664
Autor:
De Lorenci, V. A., Ribeiro, C. C. H.
Quantum vacuum fluctuations of the electromagnetic field in empty space seem not to produce observable effects over the motion of a charged test particle. However, when a change in the background vacuum state is implemented, as for instance when a co
Externí odkaz:
http://arxiv.org/abs/1902.00041
Publikováno v:
Phys. Rev. A 99, 053841 (2019)
Trirefringence is related to the existence of three distinct phase velocity solutions (and polarizations) for light propagation in a same wave-vector direction. This implies that when a trirefringent medium refracts a light ray, it is split into thre
Externí odkaz:
http://arxiv.org/abs/1901.07087
Publikováno v:
Phys. Rev. D 98, 064042 (2018)
Hadamard-Papapetrou method of field discontinuities is here employed in order to determine the effective metric that describes the propagation of acoustic perturbations in isentropic fluids. It is shown that, when dissipative effects are present, sma
Externí odkaz:
http://arxiv.org/abs/1807.05052