Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-12-07
JCAP 1104:035,2011
Physics
High Energy Physics
High Energy Physics - Theory
LaTex, 15 pages, a new section is added, containing the discussion of a special case of the operator having the second zero mo
Scientific paper
10.1088/1475-7516/2011/04/035
The functional determinant of a special second order quantum-mechanical operator is calculated with its zero mode gauged out by the method of the Faddeev-Popov gauge fixing procedure. This operator subject to periodic boundary conditions arises in applications of the early Universe theory and, in particular, determines the one-loop statistical sum in quantum cosmology generated by a conformal field theory (CFT). The calculation is done for a special case of a periodic zero mode of this operator having two roots (nodes) within the period range, which corresponds to the class of cosmological instantons in the CFT driven cosmology with one oscillation of the cosmological scale factor of its Euclidean Friedmann-Robertson-Walker metric.
Barvinsky Andrei O.
Kamenshchik Alexander Yu.
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