78 citations · 102 across the 6 of their papers we have counts for
6 papers
Precision cosmological measurements: independent evidence for dark energy
Greg Bothun, Stephen D. H. Hsu, Brian Murray
Using recent precision measurements of cosmological paramters, we re-examine whether these observations alone, independent of type Ia supernova surveys, are sufficient to imply the…
On the volatility of volatility
Stephen D. H. Hsu, Brian M. Murray
The Chicago Board Options Exchange (CBOE) Volatility Index, VIX, is calculated based on prices of out-of-the-money put and call options on the S&P 500 index (SPX). Sometimes called…
The null energy condition and instability
Roman V. Buniy, Stephen D. H. Hsu, Brian M. Murray
We extend previous work showing that violation of the null energy condition implies instability in a broad class of models, including gauge theories with scalar and fermionic matte…
Gauss-Bonnet braneworld and WMAP three year results
Brian M. Murray, Yun Soo Myung
We compare predictions for the spectral index and tensor-scalar ratio in models of patch inflation with the WMAP three year data. There are three cases of these models of inflation…
Thermal gravity, black holes and cosmological entropy
Stephen D. H. Hsu, Brian M. Murray
Taking seriously the interpretation of black hole entropy as the logarithm of the number of microstates, we argue that thermal gravitons may undergo a phase transition to a kind of…
Quintessence and Thermal Matter
S. Hsu, B. Murray
We investigate the effects of thermal interactions on tracking models of quintessence. We show that even Planck-suppressed interactions between matter and the quintessence field ca…