PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Czasopismo
2012 | 10 | 4 | 763-767
Tytuł artykułu

Einstein-Hopf drag, Doppler shift of thermal radiation and blackbody drag: Three perspectives on quantum friction

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The thermal friction force acting on an atom moving relative to a thermal photon bath has recently been calculated on the basis of the fluctuation-dissipation theorem. The thermal fluctuations of the electromagnetic field give rise to a drag force on an atom provided one allows for dissipation of the field energy via spontaneous emission. The drag force exists if the atomic polarizability has a nonvanishing imaginary part. Here, we explore alternative derivations. The damping of the motion of a simple harmonic oscillator is described by radiative reaction theory (result of Einstein and Hopf), taking into account the known stochastic fluctuations of the electromagnetic field. Describing the excitations of the atom as an ensemble of damped harmonic oscillators, we identify the previously found expressions as generalizations of the Einstein-Hopf result. In addition, we present a simple explanation for blackbody friction in terms of a Doppler shift of the thermal radiation in the inertial frame of the moving atom: The atom absorbs blue-shifted photons from the front and radiates off energy in all directions, thereby losing energy. The original plus the two alternative derivations provide for additional confirmation of an intriguing quantum friction effect, and leave no doubt regarding its existence.
Wydawca

Czasopismo
Rocznik
Tom
10
Numer
4
Strony
763-767
Opis fizyczny
Daty
wydano
2012-08-01
online
2012-07-17
Twórcy
Bibliografia
  • [1] V. Mkrtchian, V. A. Parsegian, R. Podgornik, W. M. Saslow, Phys. Rev. Lett. 91, 220801 (2003) http://dx.doi.org/10.1103/PhysRevLett.91.220801[Crossref]
  • [2] A. Einstein, L. Hopf, Ann. Phys. (Leipzig) 33, 1105 (1910)
  • [3] J. M. McKinley, Am. J. Phys. 47, 602 (1979) http://dx.doi.org/10.1119/1.11762[Crossref]
  • [4] R. Grimm, M. Weidemüller, Y. B. Ovchinnikov, Adv. At. Mol. Opt. Phys. 42, 95 (2000) http://dx.doi.org/10.1016/S1049-250X(08)60186-X[Crossref]
  • [5] P. W. Milonni, Am. J. Phys. 49, 177 (1980) http://dx.doi.org/10.1119/1.12552[Crossref]
  • [6] S. M. Rytov, Y. A. Kravtsov, V. I. Tatarskii, Principles of Statistical Radiophysics, 3 (Springer, New York, 1989) http://dx.doi.org/10.1007/978-3-642-72682-8[Crossref]
  • [7] L. P. Pitaevskii, E. M. Lifshitz, Statistical Physics, Part 2, (Pergamon Press, Oxford, UK, 1958)
  • [8] T. G. Philbin, U. Leonhardt, New J. Phys. 11, 033035 (2009) http://dx.doi.org/10.1088/1367-2630/11/3/033035[Crossref]
  • [9] J. B. Pendry, J. Phys.: Condens. Matter 9, 10301 (1997) http://dx.doi.org/10.1088/0953-8984/9/47/001[Crossref]
  • [10] J. B. Pendry, New J. Phys. 11, 033028 (2010) http://dx.doi.org/10.1088/1367-2630/12/3/033028[Crossref]
  • [11] M. S. Tomassone, A. Widom, Phys. Rev. B 56, 4938 (1997) http://dx.doi.org/10.1103/PhysRevB.56.4938[Crossref]
  • [12] A. I. Volokitin, B. N. J. Persson, Phys. Rev. B 78, 155437 (2008) http://dx.doi.org/10.1103/PhysRevB.78.155437[Crossref]
  • [13] V. Mkrtchian, V. A. Parsegian, R. Podgornik, W. M. Saslow, Phys. Rev. Lett. 93, 059002 (2004) http://dx.doi.org/10.1103/PhysRevLett.93.059002[Crossref]
  • [14] G. Łach, M. DeKieviet, U. D. Jentschura, Phys. Rev. Lett. 108, 043005 (2012) http://dx.doi.org/10.1103/PhysRevLett.108.043005[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-012-0035-x
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.