Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Klassen, T. R."'
Autor:
Klassen, T. R.
Publikováno v:
Nucl.Phys.Proc.Suppl. 73 (1999) 918-920
We describe the first steps in the extension of the Symanzik O($a$) improvement program for Wilson-type quark actions to anisotropic lattices, with a temporal lattice spacing smaller than the spatial one. This provides a fully relativistic and comput
Externí odkaz:
http://arxiv.org/abs/hep-lat/9809174
Autor:
Klassen, T. R.
Publikováno v:
Nucl.Phys. B533 (1998) 557-575
Anisotropic lattices, with a temporal lattice spacing smaller than the spatial one, allow precision Monte Carlo calculations of problems that are difficult to study otherwise: heavy quarks, glueballs, hybrids, and high temperature thermodynamics, for
Externí odkaz:
http://arxiv.org/abs/hep-lat/9803010
Publikováno v:
Phys.Rev.Lett. 80 (1998) 3448-3451
The ALPHA collaboration has determined the O(a) improved Wilson quark action for lattice spacings $a\leq 0.1$ fm, in the quenched approximation. We extend this result to coarser lattices, $a\leq 0.17$ fm, and calculate the hadron spectrum on them. Th
Externí odkaz:
http://arxiv.org/abs/hep-lat/9711052
Publikováno v:
Nucl.Phys. B517 (1998) 377-392
Accurate determinations of the physical scale of a lattice action are required to check scaling and take the continuum limit. We present a high statistics study of the static potential for the SU(3) Wilson gauge action on coarse lattices ($5.54 \leq
Externí odkaz:
http://arxiv.org/abs/hep-lat/9711003
Publikováno v:
Nucl.Phys.Proc.Suppl. 63 (1998) 847-852
After describing the Schr\"odinger functional for standard and improved gluon and quark actions we present results for the non-perturbative clover coefficients of the SW quark action coupled to the Wilson plaquette action for $\beta \geq 5.7$, as wel
Externí odkaz:
http://arxiv.org/abs/hep-lat/9710054
Autor:
Klassen, T. R.
Publikováno v:
Nucl.Phys. B509 (1998) 391-428
The Schr\"odinger Functional (quantum/lattice field theory with Dirichlet boundary conditions) is a powerful tool in the non-perturbative improvement and for the study of other aspects of lattice QCD. Here we adapt it to improved gluon and quark acti
Externí odkaz:
http://arxiv.org/abs/hep-lat/9705025
Autor:
Klassen, T. R.
I present a brief summary of the status and prospects of improved Wilson-type quark actions for coarse lattice simulations. My conclusions are optimistic.
Comment: 7 pages, LaTeX, uses sprocl.sty (included), talk at ``Multi-Scale Phenomena and T
Comment: 7 pages, LaTeX, uses sprocl.sty (included), talk at ``Multi-Scale Phenomena and T
Externí odkaz:
http://arxiv.org/abs/hep-lat/9612005
Publikováno v:
Nucl.Phys. B496 (1997) 377-407
We explore the first stage of the Symanzik improvement program for lattice Dirac fermions, namely the construction of doubler-free, highly improved classical actions on isotropic as well as anisotropic lattices (where the temporal lattice spacing, a_
Externí odkaz:
http://arxiv.org/abs/hep-lat/9611010
Publikováno v:
Nucl.Phys.Proc.Suppl. 53 (1997) 861-866
We describe two ideas useful in the construction of highly improved quark actions for simulations on coarse lattices: (1) Field transformations to solve the doubler problem without destroying tree-level improvement for on- or off-shell quantities. (2
Externí odkaz:
http://arxiv.org/abs/hep-lat/9608113
Publikováno v:
Int.J.Mod.Phys.B7:3617-3648,1993
We review recent results concerning the representation of conformal field theory characters in terms of fermionic quasi-particle excitations, and describe in detail their construction in the case of the integrable three-state Potts chain. These fermi
Externí odkaz:
http://arxiv.org/abs/hep-th/9303013