Zobrazeno 1 - 10
of 2 543
pro vyhledávání: '"Ohtani M"'
Publikováno v:
Phys.Rev.D80:034007,2009
We propose a chiral random matrix model which properly incorporates the flavor-number dependence of the phase transition owing to the \UA(1) anomaly term. At finite temperature, the model shows the second-order phase transition with mean-field critic
Externí odkaz:
http://arxiv.org/abs/0904.1860
Publikováno v:
Phys.Rev.D79:074016,2009
We study the effect of topology for a random matrix model of QCD at nonzero imaginary chemical potential or nonzero temperature. Non-universal fluctuations of Dirac eigenvalues lead to normalization factors that contribute to the $\theta$-dependence
Externí odkaz:
http://arxiv.org/abs/0902.2640
Autor:
Göckeler, M., Hägler, Philipp, Horsley, R., Nakamura, Y., Ohtani, M., Pleiter, D., Rakow, P. E. L., Schäfer, A., Schierholz, G., Schroers, W., Stüben, H., Zanotti, J. M.
Publikováno v:
PoSLAT2007:129,2007
Algorithmic progress in recent years made it possible to simulate QCD with Nf=2 flavours of O(a)-improved Wilson fermions at very light quark masses. We present the current results for baryon spectrum states, the nucleon axial coupling and the lowest
Externí odkaz:
http://arxiv.org/abs/0712.0010
Autor:
Gockeler, M., Hagler, Ph., Horsley, R., Nakamura, Y., Ohtani, M., Pleiter, D., Rakow, P. E. L., Schafer, A., Schierholz, G., Schroers, W., Stuben, H., Zanotti, J. M.
Publikováno v:
PoSLAT2007:161,2007
The nucleon electromagnetic form factors continue to be of major interest for experimentalists and phenomenologists alike. They provide important insights into the structure of nuclear matter. For a range of interesting momenta they can be calculated
Externí odkaz:
http://arxiv.org/abs/0710.2159
Autor:
Collaboration, QCDSF/UKQCD, Ohtani, M., Brommel, D., Gockeler, M., Hagler, Ph., Horsley, R., Nakamura, Y., Pleiter, D., Rakow, P. E. L., Schafer, A., Schierholz, G., Schroers, W., Stuben, H., Zanotti, J. M.
Publikováno v:
PoSLAT2007:158,2007
The internal structure of hadrons is important for a variety of topics, including the hadron form factors, proton spin and spin asymmetry in polarized proton scattering. For a systematic study generalized parton distributions (GPDs) encode important
Externí odkaz:
http://arxiv.org/abs/0710.1534
A novel laser molecular beam epitaxy (LMBE) system for the fabrication of atomically controlled oxides superlattices and an x-ray diffractometer that measures spatially-resolved x-ray diffraction spectra have been developed based on the concept of co
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504352
Autor:
Fujii, H., Ohtani, M.
We study the soft mode along the critical line in the phase diagram with the tricritical point, using the Nambu--Jona-Lasinio model. At the critical point with finite quark mass, the ordering density becomes a linear combination of the scalar, quark
Externí odkaz:
http://arxiv.org/abs/hep-ph/0403039
Autor:
Fujii, H., Ohtani, M.
Publikováno v:
Phys.Rev.D70:014016,2004
Assuming a tricritical point of the two--flavor QCD in the space of temperature, baryon number chemical potential and quark mass, we study the change of the associated soft mode along the critical line within the Ginzburg--Landau approach and the Nam
Externí odkaz:
http://arxiv.org/abs/hep-ph/0402263
Autor:
Fujii, H., Ohtani, M.
Publikováno v:
Prog.Theor.Phys.Suppl.153:157-164,2004
At the critical end point in QCD phase diagram, the scalar, vector and entropy susceptibilities are known to diverge. The dynamic origin of this divergence is identified within the chiral effective models as softening of a hydrodynamic mode of the pa
Externí odkaz:
http://arxiv.org/abs/hep-ph/0401028
Publikováno v:
Phys.Lett. B579 (2004) 347-354
We show a possibility that a color ferromagnetic state exists in SU(3) gauge theory of quark matter with two flavors. Although the state involves three types of unstable modes of gluons, all of these modes are stabilized by forming a quantum Hall sta
Externí odkaz:
http://arxiv.org/abs/hep-ph/0309066