438 citations · 5.3k across the 180 of their papers we have counts for
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Propagating phase boundaries as sonic horizons
Tanmay Vachaspati
If certain conditions are met, a propagating phase boundary can be a sonic horizon. Sonic Hawking radiation from such a phase boundary is expected in the quantum theory. The Hawkin…
Forecasting Cosmic Doomsday from CMB/LSS Cross-Correlations
Jaume Garriga, Levon Pogosian, Tanmay Vachaspati
A broad class of dark energy models, which have been proposed in attempts at solving the cosmological constant problems, predict a late time variation of the equation of state with…
Reconstruction of field theory from excitation spectra of defects
Tanmay Vachaspati
We show how to reconstruct a field theory from the spectrum of bound states on a topological defect. We apply our recipe to the case of kinks in 1+1 dimensions with one or two boun…
On formation of domain wall lattices
Nuno D. Antunes, Levon Pogosian, Tanmay Vachaspati
We study the formation of domain walls in a phase transition in which an S_5\times Z_2 symmetry is spontaneously broken to S_3\times S_2. In one compact spatial dimension we observ…
Eternal inflation and energy conditions in de Sitter spacetime
Tanmay Vachaspati
Eternal inflation is shown to require violations of the Null Energy Condition (NEC) on superhorizon scales. With light scalar fields as the matter sources in a de Sitter background…
Topological properties of the Cosmic Microwave Background polarization map
Tanmay Vachaspati, Arthur Lue
Rapid progress has been made in observations of the temperature anisotropies of the Cosmic Microwave Background (CMB). These observations have enabled cosmologists to characterize…