Radiative energy shifts of an accelerated two-level system

Audretsch, Jürgen; Müller, Rainer

doi:10.1103/physreva.52.629

Cited by 98 publications

(115 citation statements)

References 29 publications

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“…This process is not possible for inertially moving atoms, in close analogy to the proton decay discussed above. Other examples of quantum properties that are modified by acceleration include the spontaneous emission rate of an atom [5,6] and the Lamb shift [7]. We will discuss the connection between the processes considered here and the Unruh effect in more detail below.…”

Section: Introductionmentioning

confidence: 99%

Decay of accelerated particles

Müller¹

1997

Phys. Rev. D

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We study how the decay properties of particles are changed by acceleration. It is shown that under the influence of acceleration (1) the lifetime of particles is modified and (2) new processes (like the decay of the proton) become possible. This is illustrated by considering scalar models for the decay of muons, pions, and protons. We discuss the close conceptual relation between these processes and the Unruh effect.

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Section: Introductionmentioning

confidence: 99%

Decay of accelerated particles

Müller¹

1997

Phys. Rev. D

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“…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. To make the spectrum of research complete, the atom's spontaneous emission rate in the same realistic system will be considered in present paper following the general method of Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[6] to evaluate vacuum fluctuations and radiation reaction contributions to the spontaneous excitation rate [7] and radiative energy shifts [8] of an accelerated two-level atom interacting with a scalar field in a Minkowski vacuum. In particular, their results show that when the atom is accelerated, the delicate balance between vacuum fluctuations and radiation reaction is altered since the contribution of vacuum fluctuations to the rate of change of the mean excitation energy is modified while that of the radiation reaction remains the same.…”

Section: Introductionmentioning

confidence: 99%

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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“…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. Recently, the spontaneous excitation rate of an accelerated atom in the same system has been studied [25].…”

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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Radiative energy shifts of an accelerated two-level system

Cited by 98 publications

References 29 publications

Decay of accelerated particles

Decay of accelerated particles

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

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