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A No-Go Theorem for the Consistent Quantization of the Massive Gravitino on Robertson-Walker Spacetimes and Arbitrary Spin 3/2 Fields on General Curved Spacetimes
No-Go Theorem the Consistent Quantization the Massive Gravitino Robertson-Walker Spacetimes General Curved Spacetimes
2011/7/29
Abstract: We first introduce a set of conditions which assure that a free spin $\frac32$ field with $m\ge 0$ can be consistently ('unitarily') quantized on all curved spacetimes, i.e. also on spacetim...
Relative velocities for radial motion in expanding Robertson-Walker spacetimes
Robertson-Walker cosmology Fermi relative velocity kinematic relative velocity astrometric relative velocity
2011/7/28
Abstract: The expansion of space, and other geometric properties of cosmological models, can be studied using geometrically defined notions of relative velocity. In this paper, we consider test partic...
Approximate KMS states for scalar and spinor fields in Friedmann-Robertson-Walker spacetimes
Approximate KMS scala spinor fields Friedmann-Robertson-Walker spacetimes
2010/12/16
We construct and discuss Hadamard states for both scalar and Dirac spinor fields in a large
class of spatially flat Friedmann-Robertson-Walker spacetimes characterised by an initial phase either of e...