Spontaneous decay of a two-level system close to a perfectly reflecting sphere

Lima, R. P. A.; Lima, F. N.; Lyra, M. L.

doi:10.1016/j.aop.2017.01.017

Cited by 3 publications

(1 citation statement)

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“…Particularly, the spontaneous emission process can be attributed to the action of vacuum fluctuations of the quantum electromagnetic field [51][52][53][54]. A lot of previous literatures have revealed that some factors can have an appreciable impact on these quantum processes, such as the boundary condition of quantum field [55][56][57][58][59][60][61][62][63][64], the atomic motion state [65][66][67][68][69], the spacetime background, etc. In this respect, the investigations of the atomic radiative properties have been increasingly extended to the background of curved spacetimes [70][71][72][73][74][75][76][77] or spacetimes with nontrivial topology [78][79][80][81][82][83][84], for example, the Schwarzschild spacetime, the de Sitter spacetime, the Kerr spacetime, the cosmic string spacetime, the global monopole spacetime, the cosmic dispiration spacetime, and so on.…”

Section: Introductionmentioning

confidence: 99%

Radiative properties of an inertial multilevel atom in a compactified Minkowski spacetime

Cai¹,

Zhang²

2019

Class. Quantum Grav.

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A pure topological effect on the radiative processes of an inertial atom due to the compactification in a spatial dimension is investigated. The atom is locally coupled to a bath of fluctuating quantum electromagnetic field in the compactified Minkowski spacetime. Specifically, using the perturbation theory we calculate the atomic transition rates both for a static atom and for a uniformly moving atom along the compactified or non-compactified spatial direction. As a rule, the atomic transition rates depend much on the circumference of the compactified dimension and the atomic polarizability. Remarkably, for inertial atoms moving at different constant velocities along the compactified direction, their transition rates can be quite different, in sharp contrast with the case in the free Minkowski spacetime.

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Section: Introductionmentioning

confidence: 99%

Radiative properties of an inertial multilevel atom in a compactified Minkowski spacetime

Cai¹,

Zhang²

2019

Class. Quantum Grav.

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Spontaneous Radiation of a Two-Level System Confined in a Reflective Spherical Shell Quantum Dot

Lima

Lyra

2019

Braz J Phys

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Transition processes of a static multilevel atom in the cosmic string spacetime with a conducting plane boundary

Cai

Zhang

2018

Sci Rep

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We investigate the transition processes of a static multilevel atom in interaction with a fluctuating vacuum quantum electromagnetic field in the cosmic string spacetime in the presence of an infinite, perfectly conducting plane. Using the formalism proposed by DDC, we find that the presence of the boundary modifies both vacuum fluctuations and radiation reaction contributions to the atomic spontaneous emission rate. Our results indicate that the total decay rate and the boundary-induced contribution both depend upon the atom-string distance, the atom-plate separation, the extent of the polar angle deficit induced by the string, and the atomic polarization direction. By adjusting these parameters, the atomic decay rate can be either enhanced or weakened significantly by the boundary. Moreover, the presence of the boundary can distinguish certain polarization directions that bring about the same decay rate in the case of a free cosmic string spacetime. Theoretically, our work suggests a more flexible means to adjust and control the radiative processes of atoms.

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Spontaneous decay of a two-level system close to a perfectly reflecting sphere

Cited by 3 publications

References 44 publications

Radiative properties of an inertial multilevel atom in a compactified Minkowski spacetime

Radiative properties of an inertial multilevel atom in a compactified Minkowski spacetime

Spontaneous Radiation of a Two-Level System Confined in a Reflective Spherical Shell Quantum Dot

Transition processes of a static multilevel atom in the cosmic string spacetime with a conducting plane boundary

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