{kappa}-Minkowski spacetime and a uniformly accelerating observer

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.045017· OSTI ID:21011110

Kim, Hyeong-Chan; Yee, Jae Hyung; Rim, Chaiho ^[1]

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1. Deptartment of Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)

We analyze the response of a detector with a uniform acceleration {alpha} in {kappa}-Minkowski spacetime using the first order perturbation theory. The monopole detector is coupled to a massless complex scalar field in such a way that it is sensitive to the noncommutativity of spacetime present in the {kappa}-deformation. The response function deviates from the thermal distribution of Unruh temperature at the order of 1/{kappa} and vanishes exponentially as the proper time of the detector exceeds a certain critical time, a logarithmic function of {kappa}. This suggests that the Unruh temperature becomes not only fuzzy but also eventually decreases to zero in this model.

• OSTI ID: 21011110
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATION
DISTRIBUTION
FUZZY LOGIC
MINKOWSKI SPACE
MONOPOLES
PARTICLE IDENTIFICATION
PERTURBATION THEORY
RESPONSE FUNCTIONS
SCALAR FIELDS
SPACE-TIME