Radiative level shifts of an accelerated hydrogen atom and the Unruh effect in quantum electrodynamics

Passante, Roberto

doi:10.1103/physreva.57.1590

Cited by 94 publications

(104 citation statements)

References 23 publications

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“…[10], where a linear interaction between a hydrogen atom and the quantum electrmagnetic field is assumed. The Hamiltonian that governs the time evolution of the atom with respect to the proper time τ is written as…”

Section: Interaction Of a Hydrogen Atom And The Electromagnetic Fmentioning

confidence: 99%

“…We couple the hydrogen atom and the quantum electromagnetic field in the multipolar coupling scheme [10] …”

Section: Interaction Of a Hydrogen Atom And The Electromagnetic Fmentioning

confidence: 99%

“…However, a two-level atom interacting with a scalar field is more or less a toy model, and a more realistic system would be a multi-level atom, a hydrogen atom, for instance, in interaction with a quantized electromagnetic field. Such a system was recently examined in terms of the radiative energy shifts of the accelerated atom [10] using the method of Ref. [8], where non-thermal corrections to the energy shifts were found in addition to the usual thermal ones associated with the temperature T = a/2π.…”

Section: Introductionmentioning

confidence: 99%

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Spontaneous excitation of an accelerated hydrogen atom coupled with electromagnetic vacuum fluctuations

2006

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We consider a multilevel hydrogen atom in interaction with the quantum electromagnetic field and separately calculate the contributions of the vacuum fluctuation and radiation reaction to the rate of change of the mean atomic energy of the atom for uniform acceleration. It is found that the acceleration disturbs the vacuum fluctuations in such a way that the delicate balance between the contributions of vacuum fluctuation and radiation reaction that exists for inertial atoms is broken, so that the transitions to higher-lying states from ground state are possible even in vacuum. In contrast to the case of an atom interacting with a scalar field, the contributions of both electromagnetic vacuum fluctuations and radiation reaction to the spontaneous emission rate are affected by the acceleration, and furthermore the contribution of the vacuum fluctuations contains a non-thermal acceleration-dependent correction, which is possibly observable.

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Section: Interaction Of a Hydrogen Atom And The Electromagnetic Fmentioning

confidence: 99%

“…We couple the hydrogen atom and the quantum electromagnetic field in the multipolar coupling scheme [10] …”

Section: Interaction Of a Hydrogen Atom And The Electromagnetic Fmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spontaneous excitation of an accelerated hydrogen atom coupled with electromagnetic vacuum fluctuations

2006

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“…[7] and generalized in Ref. [24,25] to the case of a multi-level atom interacting with a quantized electromagnetic field in the multipolar coupling scheme, then apply it to the case of an inertial atom in Sec. III and to the case of an accelerated atom in Sec.…”

Section: Introductionmentioning

confidence: 99%

“…However, a two-level atom interacting with a scalar field is more or less a toy model, and a more realistic system would be a multi-level atom, a hydrogen atom, for instance, in interaction with a quantized electromagnetic field. Let us note that such a system was examined in terms of the radiative energy shifts of an accelerated atom [24] using the method of Ref. [8], where non-thermal corrections to the energy shifts were found in addition to the usual thermal ones associated with the temperature T = a/2π.…”

Section: Introductionmentioning

confidence: 99%

Spontaneous absorption of an accelerated hydrogen atom near a conducting plane in vacuum

Zhu

2006

Phys. Rev. D

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We study, in the multipolar coupling scheme, a uniformly accelerated multilevel hydrogen atom in interaction with the quantum electromagnetic field near a conducting boundary and separately calculate the contributions of the vacuum fluctuation and radiation reaction to the rate of change of the mean atomic energy. It is found that the perfect balance between the contributions of vacuum fluctuations and radiation reaction that ensures the stability of ground-state atoms is disturbed, making spontaneous transition of ground-state atoms to excited states possible in vacuum with a conducting boundary. The boundary-induced contribution is effectively a nonthermal correction, which enhances or weakens the nonthermal effect already present in the unbounded case, thus possibly making the effect easier to observe. An interesting feature worth being noted is that the nonthermal corrections may vanish for atoms on some particular trajectories. * Mailing address 1

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Resonance Interaction Energy in κ‐Minkowski Spacetime

2023

Annalen der Physik

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If gravity is quantized, one of the consequences may be that the spacetime coordinates are quantized and become noncommutative. The κ‐Minkowski spacetime is such kind of noncommutative spacetime. In this paper, the resonance interaction energy of a two‐atom system coupled with a fluctuating vacuum scalar field in the κ‐Minkowski spacetime is studied. It is found that the resonance interaction energy is dependent on the interatomic separation, the transition wavelength of the atoms, and the spacetime non‐commutativity. When the interatomic separation is small compared with a characteristic length determined by the spacetime non‐commutativity parameter and the transition wavelength, the resonance interaction energy is that in the Minkowski spacetime plus a correction due to the spacetime non‐commutativity. When the interatomic separation is comparable to or larger than the characteristic length, the resonance interaction energy cannot be organized in the form of a Minkowski term plus a correction, which indicates that the long‐range behavior of the vacuum in the κ‐Minkowski spacetime is fundamentally different from that in the Minkowski spacetime.

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Radiative level shifts of an accelerated hydrogen atom and the Unruh effect in quantum electrodynamics

Cited by 94 publications

References 23 publications

Spontaneous excitation of an accelerated hydrogen atom coupled with electromagnetic vacuum fluctuations

Spontaneous excitation of an accelerated hydrogen atom coupled with electromagnetic vacuum fluctuations

Spontaneous absorption of an accelerated hydrogen atom near a conducting plane in vacuum

Resonance Interaction Energy in κ‐Minkowski Spacetime

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