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Physics
Special Issues
Matter-Radiation Interactions—In Memory of Professor Francesco Saverio Persico
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Special Issue "Matter-Radiation Interactions—In Memory of Professor Francesco Saverio Persico"

A special issue of Physics (ISSN 2624-8174). This special issue belongs to the section "Atomic Physics".

Deadline for manuscript submissions: 30 November 2023 | Viewed by 1611

Special Issue Editors

Prof. Dr. Pietro Paolo Corso

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Guest Editor
Dipartimento di Fisica e Chimica – E. Segrè, Università degli Studi di Palermo, Via Archirafi 36, I-90123 Palermo, Italy
Interests: laser interaction with atoms, molecules and nanomolecules; atoms and molecules in strong field; high-harmonic generation; attosecond-pulse generation; computational physics; molecular dynamics
Prof. Dr. Roberto Passante

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Guest Editor
Dipartimento di Fisica e Chimica – E. Segrè, Università degli Studi di Palermo, Via Archirafi 36, I-90123 Palermo, Italy
Interests: casimir physics; quantum electrodynamics; quantum fluctuations; radiative processes in static and dynamical structured environments; quantum field theory in accelerated frames and in a curved space-time; quantum optomechanics; resonances and dressed unstable states; microscopic origin of time asymmetry in quantum physics; cosmological axions and dark matter; axion electrodynamics
Special Issues, Collections and Topics in MDPI journals
Dr. Lucia Rizzuto

E-Mail Website
Guest Editor
Dipartimento di Fisica e Chimica – E. Segrè, Università degli Studi di Palermo, Via Archirafi 36, I-90123 Palermo, Italy
Interests: quantum electrodynamics; vacuum fluctuations; casimir effects; causality and non-locality in QED; radiative processes in static and dynamical structured environments; quantum field theory in accelerated frames; unruh effect; cosmological axions and dark matter
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Professor Francesco Saverio Persico

text

Dear Colleagues,

This Special Issue is dedicated to the memory of our colleague and friend Professor Francesco Saverio Persico, who passed away in 2017. He has been Professor of Theoretical Physics at the University of Palermo, Italy. He has given fundamental contributions to theoretical condensed matter physics, quantum optics, quantum electrodynamics, atomic and molecular physics.

This Special issue will include original papers and review papers on subjects related to the research fields where Prof. Persico has been active, mainly atom-radiation interaction, quantum vacuum fluctuations, Casimir and Casimir-Polder interactions, radiation-mediated intermolecular interactions, spin-phonon interactions, atomic and molecular physics in strong external electromagnetic fields, high harmonic generation and nonlinear quantum mechanics, laser interaction with molecules and nanomolecules, superradiance, and in general in the fields of quantum optics and quantum electrodynamics, atomic and molecular physics, as well as condensed matter physics.

All these research subjects are still very active subjects of the current research in theoretical and experimental physics.

Prof. Dr. Pietro Paolo Corso
Prof. Dr. Roberto Passante
Dr. Lucia Rizzuto
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Physics is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • atom-radiation dressed states
  • vacuum fluctuations and related effects
  • casimir physics
  • atomic and molecular physics in strong external fields
  • nanoscale molecules driven by a laser field
  • persistent currents
  • high harmonic generation (HHG)
  • dressed states in quantum field theory
  • spin-phonon interactions in condensed matter physics
  • superradiance
  • cavity quantum electrodynamics
  • radiative processed in structured environments
  • unruh effect and hawking effect
  • quantum field theory in a curved spacetime

Published Papers (3 papers)

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Research

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Article
Is the H Atom Surrounded by A Cloud of Virtual Quanta Due to the Lamb Shift?
by
G. Jordan Maclay
Physics 2023, 5(3), 883-894; https://doi.org/10.3390/physics5030057 - 18 Aug 2023
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Abstract
The Lamb shift, one of the most fundamental interactions in atomic physics, arises from the interaction of H atoms with the electromagnetic fluctuations of the quantum vacuum. The energy shift has been computed in a variety of ways. The energy shift, as Feynman, [...] Read more.
The Lamb shift, one of the most fundamental interactions in atomic physics, arises from the interaction of H atoms with the electromagnetic fluctuations of the quantum vacuum. The energy shift has been computed in a variety of ways. The energy shift, as Feynman, Power, and Milonni demonstrated, equals the change in the vacuum energy in the volume containing the H atoms due to the change in the index of refraction arising from the presence of the H atoms. Using this result and a group theoretical calculation of the contribution to the Lamb shift from each frequency of the vacuum fluctuations, in this paper we obtain an expression for the region of the vacuum energy for each frequency ω around the H atom due to the Lamb shift. This same field plays an essential role in the van der Waals force. We show the ground state atom is surrounded by a region of positive vacuum energy that extends well beyond the atom for low frequencies. This region can be described as a steady state cloud of vacuum fluctuations. For energies E=ℏω less than 1 eV, where ℏ is the reduced Planck constant and ω is frequency, the radius of the positive energy region is shown to be approximately 14.4/E Å. For a vacuum fluctuation of wavelength, λ, the radius is (α/2π)λ, where α is the fine-structure constant. Thus, for long wavelengths, the region has macroscopic dimensions. The energy–time uncertainty relation predicts a maximum possible radius that is larger than the radius based on the radiative shift calculations by a factor of 1/4α. Full article
(This article belongs to the Special Issue Matter-Radiation Interactions—In Memory of Professor Francesco Saverio Persico)
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Article
The Zeldovich Number: A Universal Dimensionless Measure for the Electromagnetic Field
by
Iwo Bialynicki-Birula
and
Zofia Bialynicka-Birula
Physics 2023, 5(3), 862-872; https://doi.org/10.3390/physics5030055 - 15 Aug 2023
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Abstract
In this paper we extend the Zeldovich formula, which was originally derived for the free electromagnetic field and was interpreted as the number of photons. We show that our extended formula gives a universal dimensionless measure of the overall strength of electromagnetic fields: [...] Read more.
In this paper we extend the Zeldovich formula, which was originally derived for the free electromagnetic field and was interpreted as the number of photons. We show that our extended formula gives a universal dimensionless measure of the overall strength of electromagnetic fields: free fields and fields produced by various sources, in both the classical and the quantum theory. In particular, we find that this number—called here the Zeldovich number—for macroscopic systems is very large, of the order of 1020. For the hydrogen atom in the ground state, the Zeldovich number is equal to 0.025 and for the xenon atom it is around 50. Full article
(This article belongs to the Special Issue Matter-Radiation Interactions—In Memory of Professor Francesco Saverio Persico)
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Review

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Review
Conduction–Radiation Coupling between Two Distant Solids Interacting in a Near-Field Regime
by
Marta Reina
,
Chams Gharib Ali Barura
,
Philippe Ben-Abdallah
and
Riccardo Messina
Physics 2023, 5(3), 784-796; https://doi.org/10.3390/physics5030049 - 13 Jul 2023
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Abstract
In the classical approach to dealing with near-field radiative heat exchange between two closely spaced bodies, no coupling between the different heat carriers inside the materials and thermal photons is usually considered. Here, we provide an overview of the current state of research [...] Read more.
In the classical approach to dealing with near-field radiative heat exchange between two closely spaced bodies, no coupling between the different heat carriers inside the materials and thermal photons is usually considered. Here, we provide an overview of the current state of research on this coupling between solids of different sizes while paying specific attention to the impact of the conduction regime inside the solids on the conduction–radiation coupling. We describe how the shape of the solids affects this coupling, and show that it can be located at the origin of a drastic change in the temperature profiles inside each body and the heat flux exchanged between them. These results could have important implications in the fields of nanoscale thermal management, near-field solid-state cooling, and nanoscale energy conversion. Full article
(This article belongs to the Special Issue Matter-Radiation Interactions—In Memory of Professor Francesco Saverio Persico)
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