Publications (5)
Bethe-Salpeter Amplitudes and Density Correlations for Mesons with Wilson Fermions
Rajan Gupta, David Daniel, Jeffrey Grandy
We present an investigation of various gauge invariant definitions of the Bethe-Salpeter (BS) amplitude for mesons in lattice QCD, and compare them to the Coulomb and Lan…
Semileptonic form factors of heavy-light mesons from lattice QCD
Rajan Gupta, Tanmoy Bhattacharya, David Daniel
The form factors for the semileptonic decays of heavy-light pseudoscalar mesons of the type are studied in quenched lattice QCD at using Wilson fermions. We e…
HACC: Simulating Sky Surveys on State-of-the-Art Supercomputing Architectures
Salman Habib, Adrian Pope, Hal Finkel +11
Current and future surveys of large-scale cosmic structure are associated with a massive and complex datastream to study, characterize, and ultimately understand the physics behind…
Particle mesh simulations of the Lyman-alpha forest and the signature of Baryon Acoustic Oscillations in the intergalactic medium
Martin White, Adrian Pope, Jordan Carlson +5
We present a set of ultra-large particle-mesh simulations of the LyA forest targeted at understanding the imprint of baryon acoustic oscillations (BAO) in the inter-galactic medium…
The Universe at Extreme Scale: Multi-Petaflop Sky Simulation on the BG/Q
Salman Habib, Vitali Morozov, Hal Finkel +9
Remarkable observational advances have established a compelling cross-validated model of the Universe. Yet, two key pillars of this model -- dark matter and dark energy -- remain m…