Quantum thermal field fluctuation induced corrections to the interaction
between two ground-state atoms
- URL: http://arxiv.org/abs/2201.10296v3
- Date: Fri, 18 Nov 2022 10:24:29 GMT
- Title: Quantum thermal field fluctuation induced corrections to the interaction
between two ground-state atoms
- Authors: Shijing Cheng, Wenting Zhou, and Hongwei Yu
- Abstract summary: We generalize the formalism proposed by Dalibard, Dupont-Roc, and Cohen-Tannoudji [the DDC formalism] in the fourth order for two atoms in interaction with scalar fields in vacuum to a thermal bath at finite temperature $T$.
We analyze in detail the thermal corrections to the van der Waals and Casimir-Polder interactions.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We generalize the formalism proposed by Dalibard, Dupont-Roc, and
Cohen-Tannoudji [the DDC formalism] in the fourth order for two atoms in
interaction with scalar fields in vacuum to a thermal bath at finite
temperature $T$, and then calculate the interatomic interaction energy of two
ground-state atoms separately in terms of the contributions of thermal
fluctuations and the radiation reaction of the atoms and analyze in detail the
thermal corrections to the van der Waals and Casimir-Polder interactions. We
discover a particular region, i.e., $\sqrt[4]{\lambda^3\beta}\ll L\ll \lambda$
with $L$, $\beta$ and $\lambda$ denoting the interatomic separation, the
wavelength of thermal photons and the transition wavelength of the atoms
respectively, where the thermal corrections remarkably render the van der Waals
force, which is usually attractive, repulsive, leading to an interesting
crossover phenomenon of the interatomic interaction from attractive to
repulsive as the temperature increases. We also find that the thermal
corrections cause significant changes to the Casimir-Polder force when the
temperature is sufficiently high, resulting in an attractive force proportional
to $TL^{-3}$ in the $\lambda\ll\beta\ll L$ region, and a force which can be
either attractive or repulsive and even vanishing in the $ \beta\ll\lambda\ll
L$ region depending on the interatomic separation.
Related papers
- Giant splitting of the hydrogen rotational eigenenergies in the C$_2$ filled ice [0.0]
Hydrogen hydrates present a rich phase diagram influenced by both pressure and temperature, with the so-called C$$ phase emerging prominently above 2.5 GPa.
In this phase, hydrogen molecules are densely packed within a cubic ice-like lattice and the interaction with the surrounding water molecules profoundly affects their quantum rotational dynamics.
arXiv Detail & Related papers (2024-05-23T15:03:16Z) - Quantum Control of Atom-Ion Charge Exchange via Light-induced Conical
Intersections [66.33913750180542]
Conical intersections are crossing points or lines between two or more adiabatic electronic potential energy surfaces.
We predict significant or measurable non-adiabatic effects in an ultracold atom-ion charge-exchange reaction.
In the laser frequency window, where conical interactions are present, the difference in rate coefficients can be as large as $10-9$ cm$3$/s.
arXiv Detail & Related papers (2023-04-15T14:43:21Z) - Quantum Monte Carlo study of the role of p-wave interactions in
ultracold repulsive Fermi gases [0.0]
We investigate the ground-state properties of single-component Fermi gases with short-range repulsive interactions.
A comparison against recently derived second-order perturbative results shows good agreement in a broad range of interaction strength.
We find remarkable agreement with a recently derived fourth-order expansion that includes $p$-wave contributions.
arXiv Detail & Related papers (2022-12-18T20:08:32Z) - Brownian Axion-like particles [11.498089180181365]
We study the non-equilibrium dynamics of a pseudoscalar axion-like particle (ALP) weakly coupled to degrees of freedom in thermal equilibrium.
Time evolution is determined by the in-in effective action which we obtain to leading order in the (ALP) coupling.
We discuss possible cosmological consequences on structure formation, the effective number of relativistic species and birefringence of the cosmic microwave background.
arXiv Detail & Related papers (2022-09-16T00:35:04Z) - Quantum suppression of cold reactions far from the quantum regime [0.0]
We study resonant charge-exchange reactions between single cold pairs of neutral $87$Rb atoms and optically-inaccessible $87$Rb$+$ ions.
Our results indicate for the first time that quantum interference persists and effects reaction rates at very high temperatures.
arXiv Detail & Related papers (2022-08-16T12:40:59Z) - Ion-molecule reactions below 1~K: Observation of a strong enhancement of
the reaction rate of the ion-dipole reaction He$^+$+ CH$_3$F [55.41644538483948]
Reaction between He$+$ and CH$_3$F forming predominantly CH$+$ and CHF$+$.
To avoid heating of the ions by stray electric fields, the reaction was observed within the orbit of a highly excited Rydberg electron.
arXiv Detail & Related papers (2021-12-22T17:32:43Z) - Dimerization of many-body subradiant states in waveguide quantum
electrodynamics [137.6408511310322]
We study theoretically subradiant states in the array of atoms coupled to photons propagating in a one-dimensional waveguide.
We introduce a generalized many-body entropy of entanglement based on exact numerical diagonalization.
We reveal the breakdown of fermionized subradiant states with increase of $f$ with emergence of short-ranged dimerized antiferromagnetic correlations.
arXiv Detail & Related papers (2021-06-17T12:17:04Z) - Casimir Interaction Between a Plane and a Sphere: Correction to the
Proximity-Force Approximation at Intermediate Temperatures [0.0]
We consider the Casimir interaction energy between a plane and a sphere of radius $R$ at finite temperature $T$.
We derive the leading correction to the proximity-force approximation valid for such intermediate temperatures by developing the scattering formula in the plane-wave basis.
arXiv Detail & Related papers (2021-03-25T15:39:50Z) - $\mathcal{P}$,$\mathcal{T}$-odd effects for RaOH molecule in the excited
vibrational state [77.34726150561087]
Triatomic molecule RaOH combines the advantages of laser-coolability and the spectrum with close opposite-parity doublets.
We obtain the rovibrational wave functions of RaOH in the ground electronic state and excited vibrational state using the close-coupled equations derived from the adiabatic Hamiltonian.
arXiv Detail & Related papers (2020-12-15T17:08:33Z) - Electrically tuned hyperfine spectrum in neutral
Tb(II)(Cp$^{\rm{iPr5}}$)$_2$ single-molecule magnet [64.10537606150362]
Both molecular electronic and nuclear spin levels can be used as qubits.
In solid state systems with dopants, an electric field was shown to effectively change the spacing between the nuclear spin qubit levels.
This hyperfine Stark effect may be useful for applications of molecular nuclear spins for quantum computing.
arXiv Detail & Related papers (2020-07-31T01:48:57Z) - Hyperfine and quadrupole interactions for Dy isotopes in DyPc$_2$
molecules [77.57930329012771]
Nuclear spin levels play an important role in understanding magnetization dynamics and implementation and control of quantum bits in lanthanide-based single-molecule magnets.
We investigate the hyperfine and nuclear quadrupole interactions for $161$Dy and $163$Dy nucleus in anionic DyPc$.
arXiv Detail & Related papers (2020-02-12T18:25:31Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.