Results 21 to 30 of about 47,782 (131)

Transition temperature in QCD with physical light and strange quark masses [PDF]

, 2006
We present results from a calculation of the transition temperature in QCD with two light and one heavier (strange) quark mass on lattices with temporal extent N_t =4 and 6. Calculations with improved staggered fermions have been performed with a strange
Aoki Y, Bernard C, Cheng M (RBC-Bielefeld Collaboration), Frithjof Karsch, Schmidt Ch, the RBC-Bielefeld Collaboration   +5 more
core   +2 more sources

Constituent and current quark masses at low chiral energies [PDF]

, 2001
Light constituent quark masses and the corresponding dynamical quark masses are determined by data, the Quark-Level Linear $\sigma$ Model, and infrared QCD.
Scadron, M. D., Kleefeld, F., Rupp, G.
core   +3 more sources

Non-perturbative structure of the polarized nucleon sea

, 2003
We investigate the flavour and quark-antiquark structure of the polarized nucleon by calculating the parton distribution functions of the nucleon sea using the meson cloud model. We find that the SU(2) flavor symmetry in the light antiquark sea and quark-
A. I. Signal, A.I. Signal, A.I. Signal, A.W. Schreiber, A.W. Schreiber, A.W. Thomas, A.W. Thomas, B. Adeva, B. Adeva, B. Adeva, B. Adeva, B. Dressler, B. Holzenkamp, C. Boros, D.I. Diakonov, D.I. Diakonov, E.A. Hawker, F.G. Cao, F.G. Cao, F.G. Cao, Fu-Guang Cao, G.T. Garvey, H. Holtmann, J. Ashman, J. Ashman, J. Blumlein, J. Ellis, J. Ellis, K. Abe, K. Ackerstaff, M. Arneodo, M. Arneodo, M. Fukugita, M. Gluck, M. Glück, M. Hirai, P. Amaudraz, P.L. Anthony, P.V. Pobylitsa, R. Machleidt, R.S. Towell, S. Kumano, S.J. Dong, T. DeGrand, W. Melnitchouk, W. Melnitchouk, Y. Goto   +46 more
core   +1 more source

Thermal Evolution and Light Curves of Young Bare Strange Stars [PDF]

, 2002
The cooling of a young bare strange star is studied numerically by solving the equations of energy conservation and heat transport for both normal and superconducting strange quark matter inside the star.
Ch. Schaab, D. Page, Dany Page, K. Rajagopal, K. P. Levenfish, K. P. Levenfish, M. Alford, M. Lyutikov, N. Iwamoto, O. Yu. Gnedin, P. Haensel, S. E. Woosley, V. V. Usov, V. V. Usov, Vladimir V. Usov   +14 more
core   +2 more sources

Recent progresses in strange quark stars

Frontiers in Astronomy and Space Sciences
According to the hypothesis that strange quark matter may be the true ground state of matter at extremely high densities, strange quark stars should be stable and could exist in the Universe. It is possible that pulsars may actually be strange stars, but
Xiao-Li Zhang, Yong-Feng Huang, Yong-Feng Huang, Ze-Cheng Zou   +3 more
doaj   +1 more source

Consistency between SU(3) and SU(2) covariant baryon chiral perturbation theory for the nucleon mass

Physics Letters B, 2017
Treating the strange quark mass as a heavy scale compared to the light quark mass, we perform a matching of the nucleon mass in the SU(3) sector to the two-flavor case in covariant baryon chiral perturbation theory.
Xiu-Lei Ren, L. Alvarez-Ruso, Li-Sheng Geng, Tim Ledwig, Jie Meng, M.J. Vicente Vacas   +5 more
doaj   +1 more source

A new window on Strange Quark Matter as the ground state of strongly interacting matter

, 2003
If strange quark matter is the true ground state of matter, it must have lower energy than nuclear matter. Simultaneously, two-flavour quark matter must have higher energy than nuclear matter, for otherwise the latter would convert to the former. We show,
A. Gocksch, A. Manohar, C. Alcock, D. Diakonov, D. Diakonov, Dipankar Bhattacharya, E. Farhi, E. Witten, G. Baym, J. Stern, J. Stern, J.A. McGovern, M. Alford, M. Alford, M. Kutschera, M.C. Birse, M.C. Birse, R. Johnson, S. Kahana, V. Soni, V. Soni, Vikram Soni   +21 more
core   +2 more sources

Cold Quark Matter [PDF]

, 2009
We perform an O(alpha_s^2) perturbative calculation of the equation of state of cold but dense QCD matter with two massless and one massive quark flavor, finding that perturbation theory converges reasonably well for quark chemical potentials above 1 GeV.
A. B. Migdal, A. B. Migdal, Aleksi Kurkela, Aleksi Vuorinen, J. I. Kapusta, J. O. Andersen, N. K. Glendenning, Paul Romatschke   +7 more
core   +2 more sources

Effects of density-dependent quark mass on phase diagram of three-flavor quark matter

, 2005
Considering the density dependence of quark mass, we investigate the phase transition between the (unpaired) strange quark matter and the color-flavor-locked matter, which are supposed to be two candidates for the ground state of strongly interacting ...
Li Xue-Qian, M. Alford, Zhang Xiao-Bing
core   +1 more source

Light Quark Masses with Dynamical Wilson Fermions [PDF]

, 1997
We determine the masses of the light and the strange quarks in the $\bar{MS}$-scheme using our high-statistics lattice simulation of QCD with dynamical Wilson fermions. For the light quark mass we find $m^{light}_{\bar{MS}}(2 GeV) = 2.7(2) MeV$, which is
A Spitz, Allton, Allton, Bhattacharya, Bijnens, Conti, G Ritzenhöfer, G Siegert, Gough, Gupta, Güsken, H Hoeber, J Viehoff, K Schilling, Lepage, Leutwyler, Mackenzie, Martinelli, N Eicker, P Lacock, P Ueberholz, S Güsken, Th Lippert, U Glässner   +23 more
core   +3 more sources