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61 results on '"Pirozhenko, I. G."'

51. The heat-kernel coefficient a[sub 2] and the Casimir energy of a dielectric cylinder.

Author

Bordag, M. and Pirozhenko, I. G.

Subjects
*CASIMIR effect, *DIELECTRICS, *QUANTUM electrodynamics
Abstract

We calculate the heat kernel coefficients for the electromagnetic field in the background of a dielectric cylinder with non equal speeds of light inside and outside. The coefficient α[sub 2] whose vanishing makes the vacuum energy of a massless field unique, turns out to be zero in dilute order, i.e., in order (ε - 1)[sup 2], and nonzero beyond. As a consequence, the vanishing of the vacuum energy in the presence of a dielectric cylinder found by Casimir-Polder summation must take place irrespectively of the methods by which it might be calculated. [ABSTRACT FROM AUTHOR]

Published
2001

60. Direct mode summation for the Casimir energy of spherical shell and compact ball.

Author

Beig, R., Ehlers, J., Frisch, U., Hepp, K., Jaffe, R. L., Kippenhahn, R., Ojima, I., Weidenmüller, H. A., Wess, J., Zittartz, J., Beiglböck, W., Eisenächer, Monika, Wess, Julius, Ivanov, Evgeny A., Nesterenko, V. V., and Pirozhenko, I. G.

Abstract

A simple method for calculating the Casimir energy for sphere and compact ball is developed which is based on a direct mode summation by means of contour integration in a complex plane of eigenfrequencies. [ABSTRACT FROM AUTHOR]

Published
1999
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