Non-trivial classical backgrounds with vanishing quantum corrections

Sriramkumar, L. ; Mukund, R. ; Padmanabhan, T. (1997) Non-trivial classical backgrounds with vanishing quantum corrections Physical Review D - Particles, Fields, Gravitation and Cosmology, 55 (10). pp. 6147-6154. ISSN 1550-7998

Full text not available from this repository.

Official URL:

Related URL:


Vacuum polarization and particle production effects in classical electromagnetic and gravitational backgrounds can be studied by the effective Lagrangian method. Background field configurations for which the effective Lagrangian is zero are special in the sense that the lowest order quantum corrections vanish for such configurations. We propose here the conjecture that there will be neither particle production nor vacuum polarization in classical field configurations for which all the scalar invariants are zero. We verify this conjecture, by explicitly evaluating the effective Lagrangian, for nontrivial electromagnetic and gravitational backgrounds with vanishing scalar invariants. The implications of this result are discussed.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:72499
Deposited On:29 Nov 2011 05:37
Last Modified:29 Nov 2011 05:37

Repository Staff Only: item control page