Van der Waals and resonance interactions between accelerated atoms in vacuum and the Unruh effect

Lattuca, Margherita; Marino, Jamir; Noto, Antonio; Passante, Roberto; Rizzuto, Lucia; Spagnolo, S.; Zhou, Wenting

doi:10.1088/1742-6596/880/1/012042

Cited by 7 publications

(14 citation statements)

References 39 publications

(90 reference statements)

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“…Very recently, we studied the resonance interaction energy between two static atoms interacting with quantum electromagnetic fields near a perfectly reflecting boundary and correlated by an entangled state. We discovered that for some specific geometric configurations of the two-atom system with respect to the mirror, the resonance interaction energy exhibits new behaviors as compared with those of two static ones in an unbounded Minkowski spacetime [70,71].…”

Section: Introductionmentioning

confidence: 99%

Boundarylike behaviors of the resonance interatomic energy in a cosmic string spacetime

Zhou

2018

Phys. Rev. D

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By generalizing the formalism proposed by Dalibard, Dupont-Roc and Cohen Tannoudji, we study the resonance interatomic energy of two identical atoms coupled to quantum massless scalar fields in a symmetric/antisymmetric entangled state in the Minkowski and cosmic string spacetimes. We find that in both spacetimes, the resonance interatomic energy has nothing to do with the field fluctuations but is attributed to the radiation reaction of the atoms only. We then concretely calculate the resonance interatomic energy of two static atoms near a perfectly reflecting boundary in the Minkowski spacetime and near an infinite and straight cosmic string respectively. We show that the resonance interatomic energy in both cases can be enhanced or suppressed and even nullified as compared with that in an unbounded Minkowski spacetime, because of the presence of the boundary in the Minkowski spacetime or the nontrivial spacetime topological structure of the cosmic string. Besides, we also discover that the resonance interatomic energy in the cosmic string spacetime exhibits some peculiar properties, making it in principle possible to sense different cosmic string spacetimes via the resonance interatomic energy.

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Section: Introductionmentioning

confidence: 99%

Boundarylike behaviors of the resonance interatomic energy in a cosmic string spacetime

Zhou

2018

Phys. Rev. D

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“…In any case, a direct verification of the effect, and in general of acceleration-dependent effects, could allow us to solve some fundamental controversies about its physical interpretation. Recently, the effects of an accelerated motion on the radiative properties of atoms/molecules in vacuum have been discussed in the literature [20][21][22][23][24][25][26]. Changes in the spontaneous emission rate [20,[27][28][29] or in the Lamb shift of single uniformly accelerating atoms [21,22], as well as the dispersion Casimir-Polder interaction between a uniformly accelerated atom and a reflecting plate [30][31][32][33][34] or between two uniformly accelerated atoms [35,36], have been investigated, and their relation with the Unruh effect was discussed.…”

Section: Introductionmentioning

confidence: 99%

Resonance Dipole–Dipole Interaction between Two Accelerated Atoms in the Presence of a Reflecting Plane Boundary

2018

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We study the resonant dipole-dipole interaction energy between two non-inertial identical atoms, one excited and the other in the ground state, prepared in a correlated Bell-type state, and interacting with the scalar field or the electromagnetic field nearby a perfectly reflecting plate. We suppose the two atoms move with the same uniform acceleration, parallel to the plane boundary, and that their separation is constant during the motion. By separating the contributions of radiation reaction field and vacuum fluctuations to the resonance energy shift of the two-atom system, we show that Unruh thermal fluctuations do not affect the resonance interaction, which is exclusively related to the radiation reaction field. However, non-thermal effects of acceleration in the radiation-reaction contribution, beyond the Unruh acceleration-temperature equivalence, affect the resonance interaction energy. By considering specific geometric configurations of the two-atom system relative to the plate, we show that the presence of the mirror significantly modifies the resonance interaction energy between the two accelerated atoms. In particular, we find that new and different features appear with respect to the case of atoms in the free-space, related to the presence of the boundary and to the peculiar structure of the quantum electromagnetic field vacuum in the locally inertial frame. Our results suggest the possibility to exploit the resonance interaction between accelerated atoms as a probe for detecting the elusive effects of atomic acceleration on radiative processes.

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“…In the framework of this theory, the Casimir-Polder interaction was investigated for different atoms and surface materials [4][5][6][7][8][9][10][11]. Calculations of this kind are useful for interpretation of experiments on Bose-Einstein condensation [12][13][14], quantum reflection [15][16][17] and, e.g., for understanding of the resonance interaction of two atoms near a boundary surface [18].…”

Section: Introductionmentioning

confidence: 99%

Low-temperature behavior of the Casimir-Polder free energy and entropy for an atom interacting with graphene

Mostepanenko

2018

Phys. Rev. A

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The analytic expressions for the free energy and entropy of the Casimir-Polder interaction between a polarizable and magnetizable atom and a graphene sheet are found in the limiting case of low temperature. In so doing, the response of graphene to electromagnetic fluctuations is described in the framework of the Dirac model by means of the polarization tensor in (2+1)-dimensional space-time. It is shown that the dominant contribution to the low-temperature behavior is given by an explicit dependence of the polarization tensor on temperature as a parameter. We demonstrate that the Lifshitz theory of atom-graphene interaction satisfies the Nernst heat theorem, i.e., is thermodynamically consistent. On this basis possible reasons of thermodynamic inconsistency arising for the Casimir-Polder and Casimir interactions in the case of Drude metals are discussed.The conclusion is made that although large thermal effect arising in the Casimir interaction between Drude metals at short separations should be considered as an artifact, the giant thermal effect predicted for graphene systems is an important physical phenomenon which awaits for its experimental observation.

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Van der Waals and resonance interactions between accelerated atoms in vacuum and the Unruh effect

Cited by 7 publications

References 39 publications

Boundarylike behaviors of the resonance interatomic energy in a cosmic string spacetime

Boundarylike behaviors of the resonance interatomic energy in a cosmic string spacetime

Resonance Dipole–Dipole Interaction between Two Accelerated Atoms in the Presence of a Reflecting Plane Boundary

Low-temperature behavior of the Casimir-Polder free energy and entropy for an atom interacting with graphene

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