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Quantum Corrections to the Energy Density of a Homogeneous Bose Gas
Eric Braaten, Agustin Nieto
Quantum corrections to the properties of a homogeneous interacting Bose gas at zero temperature can be calculated as a low-density expansion in powers of , where i…
Renormalons in Electromagnetic Annihilation Decays of Quarkonium
Eric Braaten, Yu-Qi Chen
We study the large-order asymptotic behavior of the perturbation series for short-distance coefficients in the NRQCD factorization formulas for the decays J/psi --> e^+e^- and eta_…
Quantum Corrections to the Ground State of a Trapped Bose-Einstein Condensate
Eric Braaten, Agustin Nieto
In the mean-field approximation, the number density ρ(r) for the ground state of a Bose-Einstein condensate trapped by an external potential V(r) satisfies a classical field equati…
Introduction to the NRQCD Factorization Approach to Heavy Quarkonium
Eric Braaten
I present an introduction to the NRQCD factorization method for calculating annihilation rates and inclusive production rates for heavy quarkonium. Using this method, annihilation…
Calculation of P-Wave Charmonium Decay Rates Using Dimensional Regularization
Eric Braaten, Yu-Qi Chen
Contributions to the decay rates of P-wave charmonium states that are proportional to , where is the number of flavors of light quarks, are calculated in the frame…