4,143 research outputs found
Vacuum quantum effect for curved boundaries in static Robertson--Walker spacetime
The energy-momentum tensor for a massless conformally coupled scalar field in
the region between two curved boundaries in static Robertson--Walker
spacetime is investigated. We assume that the scalar field satisfies the
Dirichlet boundary condition on the boundaries. Robertson--Walker space
is conformally related to the Rindler space, as a result we can obtain vacuum
expectation values of energy-momentum tensor for conformally invariant field in
Robertson--Walker space from the corresponding Rindler counterpart by the
conformal transformation.Comment: 7 pages, no figures; Clarifying comments added, no physics changed,
version to appear in PLB (2009
Application of EFT at Thermal Energies
We have been evaluated some observables of n-d systems by using pionless
Effective Field Theory(\EFTNoPion) and insertion of the three-body force up to
next-to-next to leading order(NLO). The evaluated data has been compared
with experimental and the three-nucleon calculation of the total cross section
with modern realistic two- and three-nucleon forces AV18/UrbIX potential models
calculations.Comment: 3 pages, 1 figure and 1 table. Talk given at 20th European Conference
on Few-Body Problems in Physics (EFB 20), Pisa, Italy, 10-14 Sep 200
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