48 citations · 158 across the 7 of their papers we have counts for
3 papers · 1 filter
The Quantum Propagator for a Nonrelativistic Particle in the Vicinity of a Time Machine
Dalia S. Goldwirth, Malcolm J. Perry, Tsvi Piran +1
We study the propagator of a non-relativistic, non-interacting particle in any non-relativistic ``time-machine'' spacetime of the type shown in Fig.~1: an external, flat spacetime…
String-Dominated Cosmology
Dalia S. Goldwirth, Malcolm J. Perry
If string theory controls physics at the string scale, the dynamics of the early universe before the GUT era will be governed by the low-energy string equations of motion. Studying…
Limits on the Primordial Fluctuation Spectrum Void Sizes and CMBR Anisotropy
T. Piran, M. Lecar, D. S. Goldwirth +2
We suggest to use the common appearance of voids with a scale of $5000 \kms$ in the galaxy distribution to estimate the power spectrum on this scale. We use a simple model for a gr…