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We examine the resistivity and thermopower of single crystal specimens of the pyrochlore oxide Cd2Re2O7 at pressures up to 2GPa. Thermopower proves to be a sensitive tool in the study of the phase diagram of Cd2Re2O7. The 200K…

Strongly Correlated Electrons · Physics 2009-11-10 N. Barisic , L. Forro , D. Mandrus , R. Jin , J. He , P. Fazekas

We consider thermal QCD in the large N_C limit, mainly in 1+1 dimensions. The gauge coupling is only taken into account to minimal order, by projection onto colour singlets. An expression for the free energy, exact as N_C goes to infinity,…

High Energy Physics - Phenomenology · Physics 2016-09-06 Joakim Hallin , David Persson

The lattice QCD studies indicate that the critical temperature $T_c \simeq 260-280$ MeV of the deconfinement phase transition in quenched QCD is considerably smaller than the lowest-lying glueball mass $m_{\rm G} \simeq 1500-1700$ MeV,…

High Energy Physics - Phenomenology · Physics 2009-12-17 N. Ishii , H. Suganuma

We have performed high-resolution powder x-ray diffraction measurements on a sample of $^{242}$PuCoGa$_{5}$, the heavy-fermion superconductor with the highest critical temperature $T_{c}$ = 18.7 K. The results show that the tetragonal…

We calculate chiral susceptibilities in (2+1)-flavour QCD for different masses of the light quarks using the functional renormalisation group (fRG) approach to first-principles QCD. We follow the evolution of the chiral susceptibilities…

High Energy Physics - Phenomenology · Physics 2020-09-16 Jens Braun , Wei-jie Fu , Jan M. Pawlowski , Fabian Rennecke , Daniel Rosenblüh , Shi Yin

We report the first study of the glueball properties at finite temperatures below T_c using SU(3) anisotropic lattice QCD with beta=6.25, the renormalized anisotropy xi \equiv a_s/a_t = 4 and 20^3 \times N_t (N_t=35,36,37,38,40,43,45,50,72)…

High Energy Physics - Lattice · Physics 2009-11-07 Noriyoshi Ishii , Hideo Suganuma , Hideo Matsufuru

We study the finite temperature transition in QCD with three flavors of equal masses using the R and RHMC algorithm on lattices with temporal extent N_{\tau}=4 and 6. For the transition temperature in the continuum limit we find r_0…

We study the glueball properties at finite temperature below T_c using SU(3) anisotropic quenched lattice QCD with beta=6.25, the renormalized anisotropy gamma = a_s/a_t = 4 and 20^3 \times N_t (N_t = 35, 36, 37, 38, 40, 43, 45, 50, 72).…

High Energy Physics - Lattice · Physics 2007-05-23 Noriyoshi Ishii , Hideo Suganuma , Hideo Matsufuru

We study a number of different ingredients related to $\theta$ dependence, the non-dispersive contribution in topological susceptibility with the "wrong" sign, topological sectors in gauge theories, and related subjects using a simple…

High Energy Physics - Theory · Physics 2012-12-21 Evan Thomas , Ariel R. Zhitnitsky

We consider the topological susceptibility for an SU(N) gauge theory in the limit of a large number of colors, $N \to \infty$. At nonzero temperature, the behavior of the topological susceptibility depends upon the order of the deconfining…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Kharzeev , R. D. Pisarski , M. H. G. Tytgat

I review a selection of recent finite temperature lattice results of the past years. First I discuss the extension of the equation of state towards high temperatures and fi- nite densities, then I show recent results on the QCD topological…

High Energy Physics - Lattice · Physics 2017-04-05 Szabolcs Borsanyi

Using lattice QCD simulations with $N_f = 2$ dynamical fermions, we study the axial $U(1)$ symmetry, topological charge, and Dirac eigenvalue spectra in the high-temperature phase in which the chiral symmetry is restored. Our gauge…

High Energy Physics - Lattice · Physics 2020-07-10 Kei Suzuki , Sinya Aoki , Yasumichi Aoki , Guido Cossu , Hidenori Fukaya , Shoji Hashimoto

We perform an integral reduction for the 3-loop effective gauge coupling and screening mass of QCD at high temperatures, defined as matching coefficients appearing in the dimensionally reduced effective field theory (EQCD). Expressing both…

High Energy Physics - Phenomenology · Physics 2015-06-05 Jan Moeller , York Schroder

We study the QCD topology and axion properties at finite temperature and chemical potential in the framework of the two-flavor Nambu$-$Jona-Lasinio model. We find that the behaviors of the two lowest cumulants of the QCD topological charge…

High Energy Physics - Phenomenology · Physics 2024-11-27 Hong-Fang Gong , Qi Lu , Zhen-Yan Lu , Lu-Meng Liu , Xun Chen , Shu-Peng Wang

The leading-log QCD corrections to K-Kbar mixing in R-symmetric supersymmetric models are computed using effective field theory techniques. The spectrum topology where the gluino is significantly heavier than the squarks is motivated and…

High Energy Physics - Phenomenology · Physics 2009-11-13 Andrew E. Blechman , Siew-Phang Ng

We investigate the QCD magnetic susceptibility chi_q for flavor SU(2) at finite temperature (T) beyond the chiral limit, using the liquid instanton model, defined in Euclidean space and modified by the T-dependent caloron solution. The…

High Energy Physics - Phenomenology · Physics 2013-06-19 Seung-il Nam

In supersymmetric theories, the top quark can decay into its scalar partner plus a neutralino, with an appreciable rate. We calculate the $O(\alpha_s)$ QCD corrections to this decay mode in the minimal supersymmetric extension of the…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. Djouadi , W. Hollik , C. Junger

Recent measurements on extremely-underdoped YBa2Cu3O6+y [Phys. Rev. Lett. 99, 237003 (2007)] have allowed the critical temperature (T_c), superfluid density [rho_0 (T << T_c)] and dc conductivity [sigma_dc (T ~ T_c)] to be determined for a…

Superconductivity · Physics 2009-11-23 C. C. Homes

We study the effective parameters of QED near the decoupling temperature and show that the QED perturbation theory works perfectly fine at temperatures, below the decoupling temperature. Temperature dependent selfmass of electron, at T=m…

High Energy Physics - Phenomenology · Physics 2017-05-02 Samina S. Masood

In the low temperature confining phase of QCD or QCD-like theories it is challenging to capture the temperature dependence of observables through AdS/CFT. Using the blackfold approach we compute the quark-antiquark linear static potential…

High Energy Physics - Theory · Physics 2015-06-23 Dimitrios Giataganas , Kevin Goldstein
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