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CERN Document Server Encontrados 11 registros  1 - 10siguiente  ir al registro: La búsqueda tardó 0.50 segundos. 
1.
Renormalization of the topological charge density in QCD with dimensional regularization / Lüscher, Martin (CERN ; U. Bern, AEC) ; Weisz, Peter (Munich, Max Planck Inst.)
To all orders of perturbation theory, the renormalization of the topological charge density in dimensionally regularized QCD is shown to require no more than an additive renormalization proportional to the divergence of the flavour-singlet axial current. The proof is based on the standard BRS analysis of the QCD vertex functional in the background gauge and exploits the special algebraic properties of the charge density through the Stora--Zumino chain of descent equations..
arXiv:2103.15440; CERN-TH-2021-041; MPP-2021-38.- 2021-06-17 - 24 p. - Published in : Eur. Phys. J. C 81 (2021) 519 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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2.
Perturbative analysis of the gradient flow in non-abelian gauge theories / Lüscher, Martin (CERN) ; Weisz, Peter (Munich, Max Planck Inst.)
The gradient flow in non-abelian gauge theories on R^4 is defined by a local diffusion equation that evolves the gauge field as a function of the flow time in a gauge-covariant manner. Similarly to the case of the Langevin equation, the correlation functions of the time-dependent field can be expanded in perturbation theory, the Feynman rules being those of a renormalizable field theory on R^4 x [0,oo). [...]
arXiv:1101.0963; CERN-PH-TH-2010-290; MPP-2010-165.- 2011 - Published in : JHEP 02 (2011) 051 Springer Open Access article: PDF; External link: Preprint
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3.
Quark confinement and the bosonic string / Luscher, Martin (CERN) ; Weisz, Peter (Munich, Max Planck Inst.)
Using a new type of simulation algorithm for the standard SU(3) lattice gauge theory that yields results with unprecedented precision, we confirm the presence of a $\gamma/r$ correction to the static quark potential at large distances $r$, with a coefficient $\gamma$ as predicted by the bosonic string theory. In both three and four dimensions, the transition from perturbative to string behaviour is evident from the data and takes place at surprisingly small distances..
hep-lat/0207003; CERN-TH-2002-138; MPI-PHT-2002-24; CERN-TH-2002-138; MPI-TH-2002-024.- Geneva : CERN, 2002 - 21 p. - Published in : JHEP 07 (2002) 049 Access to fulltext document: PDF; Fulltext: PDF; SISSA/IOP Published version, local copy: PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
O(a) improved twisted mass lattice QCD / Frezzotti, Roberto (Milan Bicocca U. ; CERN) ; Sint, Stefan (CERN) ; Weisz, Peter (Munich, Max Planck Inst.)
Lattice QCD with Wilson quarks and a chirally twisted mass term (tmQCD) has been introduced in refs. [1,2]. [...]
hep-lat/0104014; CERN-TH-2001-014; MPI-PHT-2000-52; BICOCCA-FT-01-02; BICOCCA-FT-2001-02; CERN-TH-2001-014; MPI-PHT-2000-52.- Milano : Milano-Bicocca Univ. Phys. Dept., 2001 - 30 p. - Published in : JHEP 07 (2001) 048 Access to fulltext document: PDF; CERNREP: HTM; Fulltext: PDF; SISSA/IOP Published version, local copy: PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
Lattice QCD with a chirally twisted mass term / Frezzotti, Roberto (Milan Bicocca U.) ; Grassi, Pietro Antonio (New York U.) ; Sint, Stefan (CERN) ; Weisz, Peter (Munich, Max Planck Inst.)
Lattice QCD with Wilson quarks and a chirally twisted mass term represents a promising alternative regularization of QCD, which does not suffer from unphysical fermion zero modes. We show how the correlation functions of the renormalized theory are related to the theory with a standard parameterization of the mass term. [...]
hep-lat/0101001; CERN-TH-2000-384; MPI-PHT-2000-51; BICOCCA-FT-0027; NYU-TH-00-09-13; BICOCCA-FT-2000-27; CERN-TH-2000-384; MPI-PHT-2000-51; NYU-TH-2000-09-13.- Milano : Milano-Bicocca Univ. Phys. Dept., 2001 - 27 p. - Published in : JHEP 08 (2001) 058 Access to fulltext document: PDF; CERNREP: HTM; JHEP: HTM; Preprint: PDF; SISSA/IOP Published version, local copy: PDF; External links: Fulltext; JHEP Electronic Journal Server - CERN library copies
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6.
Non-perturbative O(a) improvement of lattice QCD / Luscher, Martin (DESY) ; Sint, Stefan (Florida State U., SCRI) ; Sommer, Rainer (DESY, Zeuthen ; CERN) ; Weisz, Peter (Munich, Max Planck Inst.) ; Wolff, Ulli (Humboldt U., Berlin)
The coefficients multiplying the counterterms required for O($a$) improvement of the action and the isovector axial current in lattice QCD are computed non-perturbatively, in the quenched approximation and for bare gauge couplings $g_0$ in the range $0 \leq g_0 \leq 1$. A finite-size method based on the Schr\"odinger functional is employed, which enables us to perform all calculations at zero or nearly zero quark mass. [...]
hep-lat/9609035; CERN-TH-96-218; DESY-96-180; HUB-EP-96-46; MPI-PHT-96-75; FSU-SCRI-96-101; CERN-TH-96-218; DESY-96-180; FSU-SCRI-96-101; HUB-EP-96-46; MPI-PHT-96-75.- Geneva : CERN, 1997 - 26 p. - Published in : Nucl. Phys. B 491 (1997) 323-343 Access to fulltext document: PDF; External link: hep-lat/9609035 PDF - Please contact the library if you need to access this document.
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7.
Some new results in O(a) improved lattice QCD / Luscher, Martin (DESY) ; Sint, Stefan (Munich, Max Planck Inst.) ; Sommer, Rainer (CERN ; DESY, Zeuthen) ; Weisz, Peter (Munich, Max Planck Inst.) ; Wittig, Hartmut (DESY, Zeuthen ; Julich, NIC) ; Wolff, Ulli (Humboldt U., Berlin)
It is shown how on-shell O(a) improvement can be implemented non-perturbatively in lattice QCD with Wilson quarks. Improvement conditions are obtained by requiring the PCAC relation to hold exactly in certain matrix elements. [...]
hep-lat/9608049; DESY-96-157; CERN-TH-96-217; DESY-96-157; CERN-TH-96-217.- Geneva : CERN, 1996 - 9 p.
Access to fulltext document: PDF; Fulltext: PDF; External link: hep-lat/9608049 PDF
In : 14th International Symposium on Lattice Field Theory, St. Louis, MO, USA, 4 - 8 Jun 1996, pp.905-913 - Please contact the library if you need to access this document.
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8.
Chiral symmetry and O(a) improvement in lattice QCD / Luscher, Martin (DESY) ; Sint, Stefan (Munich, Max Planck Inst.) ; Sommer, Rainer (CERN) ; Weisz, Peter (Munich, Max Planck Inst.)
The dominant cutoff effects in lattice QCD with Wilson quarks are proportional to the lattice spacing a. In particular, the isovector axial current satisfies the PCAC relation only up to such effects. [...]
hep-lat/9605038; DESY-96-086; CERN-TH-96-138; MPI-PHT-96-38; CERN-TH-96-138; DESY-96-086; MPI-PHT-96-38.- Geneva : CERN, 1996 - 43 p. - Published in : Nucl. Phys. B 478 (1996) 365-400 Access to fulltext document: PDF; External link: hep-lat/9605038 PDF - Please contact the library if you need to access this document.
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9.
Non-perturbative renormalization of lattice QCD at all scales / Jansen, Karl (DESY) ; Liu, Chuan (DESY) ; Luscher, Martin (DESY) ; Simma, Hubert (Edinburgh U.) ; Sint, Stefan (Munich, Max Planck Inst.) ; Sommer, Rainer (CERN) ; Weisz, Peter (Munich, Max Planck Inst.) ; Wolff, Ulli (Humboldt U., Berlin)
A general strategy to solve the non-perturbative renormalization problem in lattice QCD, using finite-size techniques and numerical simulations, is described. As an illustration we discuss the computation of the axial current normalization constant, the running coupling at zero quark masses and the scale evolution of the renormalized axial density. [...]
hep-lat/9512009; DESY-95-230; CERN-TH-95-327; MPI-PHT-95-124; CERN-TH-95-327; DESY-95-230; MPI-PHT-95-124.- Geneva : CERN, 1996 - 13 p. - Published in : Phys. Lett. B 372 (1996) 275-282 Access to fulltext document: PDF; External link: DESY Document Server - Please contact the library if you need to access this document.
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10.
Computation of the running coupling in the SU(2) Yang-Mills theory / Luscher, Martin (DESY) ; Sommer, Rainer (CERN) ; Wolff, Ulli (CERN) ; Weisz, Peter (Munich, Max Planck Inst.)
A finite-size scaling technique is applied to the SU(2) gauge theory (without matter fields) to compute a non-perturbatively defined running coupling alpha(q) for a range of momenta q given in units of the string tension K. We find that already at rather low q, the evolution of alpha(q) is well described by the 2-loop approximation to the Callan-Symanzik beta-function. [...]
DESY-92-096; CERN-TH-6566-92; hep-lat/9207010; CERN-TH-6566-92; DESY-92-096.- Geneva : CERN, 1993 - 26 p. - Published in : Nucl. Phys. B 389 (1993) 247-264 External link: Fulltext - CERN library copies
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CERN Document Server : Encontrados 11 registros   1 - 10siguiente  ir al registro:
Vea también: autores con nombres similares
87 Weisz, P
3 Weisz, P H
2 Weisz, P.
16 Weisz, Paul B
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