61 citations
- Williams (United States)US3 papers
- Bhabha Atomic Research CentreIN2 papers
- Carnegie Institution for ScienceUS2 papers
- Geophysical LaboratoryUS2 papers
- Michigan State UniversityUS1 paper
- University of California, BerkeleyUS1 paper
- University of Illinois Urbana-ChampaignUS1 paper
- Wake Forest UniversityUS1 paper
7 papers
A human proof for a generalization of Shalosh B. Ekhad's 10^n Lattice Paths Theorem
Nicholas A. Loehr, Bruce E. Sagan, Gregory S. Warrington
Consider lattice paths in Z^2 taking unit steps north (N) and east (E). Fix positive integers r,s and put an equivalence relation on points of Z^2 by letting v,w be equivalent if v…
First principles studies of the Born effective charges and electronic dielectric tensors for the relaxor PMN (PbMg1/3Nb2/3O3)
Narayani Choudhury, R. E. Cohen, Eric J. Walter
We report first principles density functional calculations of the Born effective charges and electronic dielectric tensors for the relaxor PMN (PbMg1/3Nb2/3O3). Visualization of th…
Correlation effects in the ground state of trapped atomic Bose gases
Wirawan Purwanto, Shiwei Zhang
We study the effects of many-body correlations in trapped ultracold atomic Bose gases. We calculate the ground state of the gas using a ground-state auxiliary-field quantum Monte C…
Positive eigenvalues and two-letter generalized words
Christopher Hillar, Charles R. Johnson, Ilya M. Spitkovsky
A generalized word in two letters and is an expression of the form in which the exponents , are nonzero real n…
Universal Extra Dimensions and Kaluza-Klein Bound States
Marc Sher
We study the bounds states of the Kaluza-Klein (KK) excitations of quarks in models of Universal Extra Dimensions. Such bound states may be detected at future lepton colliders in t…
Accurate, efficient and simple forces with Quantum Monte Carlo methods
Simone Chiesa, David Ceperley, Shiwei Zhang
Computation of ionic forces using quantum Monte Carlo methods has long been a challenge. We introduce a simple procedure, based on known properties of physical electronic densities…