31 citations
2 papers
hep-ph2008★ 11 cited
Meson and tetra-quark mixing
Ping Wang, Stephen R. Cotanch, Ignacio J. General
The mixing between q-qbar meson and qqbar-qqbar tetra-quark states is examined within an effective QCD Coulomb gauge Hamiltonian model. Mixing matrix elements of the Hamiltonian ar…
cs.MS2004★ 31 cited
Tsnnls: A solver for large sparse least squares problems with non-negative variables
Jason Cantarella, Michael Piatek
The solution of large, sparse constrained least-squares problems is a staple in scientific and engineering applications. However, currently available codes for such problems are pr…