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Nontrivial classical backgrounds with vanishing quantum corrections

DSpace at IIT Bombay

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Field Value
 
Title Nontrivial classical backgrounds with vanishing quantum corrections
 
Creator SRIRAMKUMAR, L
MUKUND, R
PADMANABHAN, T
 
Subject pair production
early universe
field
space
tensor
 
Description 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.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T22:24:02Z
2011-12-26T12:49:59Z
2011-12-27T05:35:51Z
2011-07-16T22:24:02Z
2011-12-26T12:49:59Z
2011-12-27T05:35:51Z
1997
 
Type Article
 
Identifier PHYSICAL REVIEW D, 55(10), 6147-6154
1550-7998
http://dx.doi.org/10.1103/PhysRevD.55.6147
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4545
http://hdl.handle.net/10054/4545
 
Language en