TY - GEN

T1 - Unruh radiation produced by a uniformly accelerating charged particle coupled to vacuum fluctuations ∗

AU - Oshita, Naritaka

AU - Yamamoto, Kazuhiro

AU - Zhang, Sen

N1 - Publisher Copyright:
© JGRG 2015. All rights reserved.

PY - 2015

Y1 - 2015

N2 - A particle in a uniformly accelerated motion exhibits Brownian random motions around the classical trajectory due to the coupling to the field vacuum fluctuations. Previous works show that the Brownian random motions satisfy the energy equipartition relation. Because this thermal property is understood as the consequence of the Unruh effect, this quantum radiation is termed Unruh radiation. We investigate the properties of Unruh radiation produced by a uniformly accelerating particle undergoing thermal random motions, which originate from the coupling to the vacuum fluctuations of a massless scalar field as well as an electromagnetic field. The energy flux of Unruh radiation is negative and smaller than that of Larmor radiation by one order in a/m, where a is the constant acceleration and m is the mass of the particle. Thus, the Unruh radiation appears to be a suppression of the classical Larmor radiation. The result is consistent with the previous studies on the quantum effect on the Larmor radiation.

AB - A particle in a uniformly accelerated motion exhibits Brownian random motions around the classical trajectory due to the coupling to the field vacuum fluctuations. Previous works show that the Brownian random motions satisfy the energy equipartition relation. Because this thermal property is understood as the consequence of the Unruh effect, this quantum radiation is termed Unruh radiation. We investigate the properties of Unruh radiation produced by a uniformly accelerating particle undergoing thermal random motions, which originate from the coupling to the vacuum fluctuations of a massless scalar field as well as an electromagnetic field. The energy flux of Unruh radiation is negative and smaller than that of Larmor radiation by one order in a/m, where a is the constant acceleration and m is the mass of the particle. Thus, the Unruh radiation appears to be a suppression of the classical Larmor radiation. The result is consistent with the previous studies on the quantum effect on the Larmor radiation.

UR - http://www.scopus.com/inward/record.url?scp=85091799672&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85091799672&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85091799672

T3 - Proceedings of the 25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015

SP - 1385

EP - 1396

BT - Proceedings of the 25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015

PB - Kyoto University, Yukawa Institute for Theoretical Physics

T2 - 25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015

Y2 - 7 December 2015 through 11 December 2015

ER -