Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Carter, G. W."'
Autor:
Carter, G. W., Henley, E. M.
Publikováno v:
Eur.Phys.J. A24S2 (2005) 103-104
We examine further corrections to the time component of the axial vector coupling constant in a nuclear medium. The dominant correction is that of exchange currents. The corrections we examine make the remaining discrepancy worse.
Comment: 6 pag
Comment: 6 pag
Externí odkaz:
http://arxiv.org/abs/nucl-th/0404037
Autor:
Carter, G. W.
Publikováno v:
Phys.Rev. D67 (2003) 014008
We compute the axial vector current, form factor, and coupling for quarks in the instanton liquid model with two light flavors. Non-local current corrections are derived, as required by the effective 't Hooft interaction. We obtain a pion-mediated ax
Externí odkaz:
http://arxiv.org/abs/hep-ph/0208250
Publikováno v:
Phys.Rev. D66 (2002) 036004
We consider forced tunneling in QCD, described semiclassically by instanton-antiinstanton field configurations. By separating topologically different minima we obtain details of the effective potential and study the turning states, which are similar
Externí odkaz:
http://arxiv.org/abs/hep-ph/0204224
Publikováno v:
Phys.Rev. D65 (2002) 074034
We phenomenologically study whether partonic collisions responsible for the growth of hadron-hadron cross sections at high energy can be ascribed to instanton-induced processes. Although non-perturbative in nature, these interactions occur at the sem
Externí odkaz:
http://arxiv.org/abs/hep-ph/0112036
Autor:
Carter, G. W.
Publikováno v:
eConf C010815 (2002) 149-154
If quark matter exists in the cores of neutron stars, it is most likely color superconducting. Thus a phase transition from free to paired quark matter might occur during the first minute of proto-neutron star evolution. In this talk I discuss how cr
Externí odkaz:
http://arxiv.org/abs/hep-ph/0111353
Autor:
Carter, G. W., Prakash, M.
Publikováno v:
Phys.Lett. B525 (2002) 249-254
Using a chirally invariant effective Lagrangian, we calculate the density and isospin dependences of the in-medium axial coupling, $g_A^*$, in spatially uniform matter present in core collapse supernovae and neutron stars. The quenching of $g_A^*$ wi
Externí odkaz:
http://arxiv.org/abs/nucl-th/0106029
Autor:
Carter, G. W., Shuryak, E. V.
Publikováno v:
Phys.Lett. B524 (2002) 297-302
We consider the $N_c\to\infty$ limit of QCD using a toy model in which instantons exchange color-singlet scalar fields which do not self-interact. Our main observation is that collective attraction leads the formation of large clusters containing $O(
Externí odkaz:
http://arxiv.org/abs/hep-ph/0101061
Autor:
Carter, G. W., Diakonov, D.
Publikováno v:
Nucl.Phys. B582 (2000) 571-590
Color superconductivity in QCD breaks the SU(3) color gauge group down to SU(2), inducing masses in five of the eight gluons. This is a dynamical Higgs effect, in which the diquark condensate acts as the vacuum expectation value of a composite scalar
Externí odkaz:
http://arxiv.org/abs/hep-ph/0001318
Autor:
Carter, G. W., Diakonov, D.
Publikováno v:
Nucl.Phys. A661 (1999) 625; Nucl.Phys. A663 (2000) 741-744
We consider the finite density, zero-temperature behaviour of quark matter in the instanton picture. Since the instanton-induced interactions are attractive in both $\bar{q}q$ and $qq$ channels, a competition ensues between phases of matter with cond
Externí odkaz:
http://arxiv.org/abs/hep-ph/9908314
Autor:
Carter, G. W., Jackson, A. D.
Publikováno v:
Phys.Rev. D61 (2000) 077902
The existence of a Goldstone boson is demonstrated in chiral random matrix theory. After determining the effective coupling and calculating the scalar and pseudoscalar propagators, a random phase approximation summation reveals the massless pion and
Externí odkaz:
http://arxiv.org/abs/hep-ph/9905231