Zobrazeno 31 - 40
of 4 391
pro vyhledávání: '"Jansen K"'
Publikováno v:
Phys. Rev. D 94, 114508 (2016)
In this paper we describe a new integration method for the groups $U(N)$ and $SU(N)$, for which we verified numerically that it is polynomially exact for $N\le 3$. The method is applied to the example of 1-dimensional QCD with a chemical potential. W
Externí odkaz:
http://arxiv.org/abs/1607.05027
Autor:
Sharma, A., Licup, A. J., Rens, R., Vahabi, M., Jansen, K. A., Koenderink, G. H., MacKintosh, F. C.
Publikováno v:
Phys. Rev. E 94, 042407 (2016)
Networks with only central force interactions are floppy when their average connectivity is below an isostatic threshold. Although such networks are mechanically unstable, they can become rigid when strained. It was recently shown that the transition
Externí odkaz:
http://arxiv.org/abs/1606.08218
Autor:
Abdel-Rehim, A., Alexandrou, C., Constantinou, M., Hadjiyiannakou, K., Jansen, K., Kallidonis, Ch., Koutsou, G., Aviles-Casco, A. Vaquero
Publikováno v:
Phys. Rev. Lett. 116, 252001 (2016)
We evaluate the light, strange and charm scalar content of the nucleon using one lattice QCD ensemble generated with two degenerate light quarks with mass fixed to their physical value. We use improved techniques to evaluate the disconnected quark lo
Externí odkaz:
http://arxiv.org/abs/1601.01624
The Schwinger model, or 1+1 dimensional QED, offers an interesting object of study, both at zero and non-zero temperature, because of its similarities to QCD. In this proceeding, we present the a full calculation of the temperature dependent chiral c
Externí odkaz:
http://arxiv.org/abs/1511.00794
Autor:
Alexandrou, C., Athenodorou, A., Constantinou, M., Hadjiyiannakou, K., Jansen, K., Koutsou, G., Ottnad, K., Petschlies, M.
Publikováno v:
Phys. Rev. D 93, 074503 (2016)
We evaluate the neutron electric dipole moment $\vert \vec{d}_N\vert$ using lattice QCD techniques. The gauge configurations analyzed are produced by the European Twisted Mass Collaboration using $N_f{=}2{+}1{+}1$ twisted mass fermions at one value o
Externí odkaz:
http://arxiv.org/abs/1510.05823
Autor:
ETM Collaboration, Abdel-Rehim, A., Alexandrou, C., Burger, F., Constantinou, M., Dimopoulos, P., Frezzotti, R., Hadjiyiannakou, K., Helmes, C., Jansen, K., Kallidonis, C. Jost. C., Knippschild, B., Kostrzewa, B., Koutsou, G., Liu, L., Mangin-Brinet, M., Ottnad, K., Petschlies, M., Pientka, G., Rossi, G. C., Urbach, C., Wenger, U., Werner, M.
Publikováno v:
Phys. Rev. D 95, 094515 (2017)
We present physics results from simulations of QCD using $N_f = 2$ dynamical Wilson twisted mass fermions at the physical value of the pion mass. These simulations were enabled by the addition of the clover term to the twisted mass quark action. We s
Externí odkaz:
http://arxiv.org/abs/1507.05068
Autor:
Abdel-Rehim, A., Alexandrou, C., Constantinou, M., Dimopoulos, P., Frezzotti, R., Hadjiyiannakou, K., Jansen, K., Kallidonis, Ch., Kostrzewa, B., Koutsou, G., Mangin-Brinet, M., Oehm, M., Rossi, G. C., Urbach, C., Wenger, U.
Publikováno v:
Phys. Rev. D 93, 039904 (2016)
We present results on the nucleon scalar, axial and tensor charges as well as on the momentum fraction, and the helicity and transversity moments. The pion momentum fraction is also presented. The computation of these key observables is carried out u
Externí odkaz:
http://arxiv.org/abs/1507.04936
Autor:
Sharma, A., Licup, A. J., Rens, R., Sheinman, M., Jansen, K. A., Koenderink, G. H., MacKintosh, F. C.
Disordered fibrous networks are ubiquitous in nature as major structural components of living cells and tissues. The mechanical stability of networks generally depends on the degree of connectivity: only when the average number of connections between
Externí odkaz:
http://arxiv.org/abs/1506.07792
Publikováno v:
Phys. Rev. D 92, 034519 (2015)
We demonstrate the suitability of tensor network techniques for describing the thermal evolution of lattice gauge theories. As a benchmark case, we have studied the temperature dependence of the chiral condensate in the Schwinger model, using matrix
Externí odkaz:
http://arxiv.org/abs/1505.00279
We apply the Quasi Monte Carlo (QMC) and recursive numerical integration methods to evaluate the Euclidean, discretized time path-integral for the quantum mechanical anharmonic oscillator and a topological quantum mechanical rotor model. For the anha
Externí odkaz:
http://arxiv.org/abs/1503.05088