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5 papers · 2 filters
Scaling of cosmic string loops
Vitaly Vanchurin, Ken D. Olum, Alexander Vilenkin
We study the spectrum of loops as a part of a complete network of cosmic strings in flat spacetime. After a long transient regime, characterized by production of small loops at the…
Minkowski Vacuum Stress Tensor Fluctuations
L. H. Ford, Thomas A. Roman
We study the fluctuations of the stress tensor for a massless scalar field in two and four-dimensional Minkowski spacetime in the vacuum state. Covariant expressions for the stress…
Spacetime in Semiclassical Gravity
L. H. Ford
This article will summarize selected aspects of the semiclassical theory of gravity, which involves a classical gravitational field coupled to quantum matter fields. Among the issu…
Stochastic Spacetime and Brownian Motion of Test Particles
L. H. Ford
The operational meaning of spacetime fluctuations is discussed. Classical spacetime geometry can be viewed as encoding the relations between the motions of test particles in the ge…
Cosmic string scaling in flat space
Vitaly Vanchurin, Ken Olum, Alexander Vilenkin
We investigate the evolution of infinite strings as a part of a complete cosmic string network in flat space. We perform a simulation of the network which uses functional forms for…