%0 Journal Article %1 Wang2002How %A Wang, Qun %A Rischke, Dirk H. %D 2002 %I American Physical Society %J Physical Review D %K color\_superconductivity, gap %N 5 %P 054005+ %R 10.1103/physrevd.65.054005 %T How the quark self-energy affects the color-superconducting gap %U http://dx.doi.org/10.1103/physrevd.65.054005 %V 65 %X We consider color superconductivity with two flavors of massless quarks which form Cooper pairs with total spin zero. We solve the gap equation for the color-superconducting gap parameter to subleading order in the QCD coupling constant g at zero temperature. At this order in g, there is also a previously neglected contribution from the real part of the quark self-energy to the gap equation. Including this contribution leads to a reduction of the color-superconducting gap parameter φ0 by a factor b0′=exp-(π2+4)/8≃0.177. On the other hand, the BCS relation Tc≃0.57φ0 between φ0 and the transition temperature Tc is shown to remain valid after taking into account corrections from the quark self-energy. The resulting value for Tc confirms a result obtained previously with a different method.

@article{Wang2002How, abstract = {We consider color superconductivity with two flavors of massless quarks which form Cooper pairs with total spin zero. We solve the gap equation for the color-superconducting gap parameter to subleading order in the QCD coupling constant g at zero temperature. At this order in g, there is also a previously neglected contribution from the real part of the quark self-energy to the gap equation. Including this contribution leads to a reduction of the color-superconducting gap parameter φ0 by a factor b0′=exp[-(π2+4)/8]≃0.177. On the other hand, the BCS relation Tc≃0.57φ0 between φ0 and the transition temperature Tc is shown to remain valid after taking into account corrections from the quark self-energy. The resulting value for Tc confirms a result obtained previously with a different method.}, added-at = {2014-01-09T15:14:33.000+0100}, author = {Wang, Qun and Rischke, Dirk H.}, biburl = {https://www.bibsonomy.org/bibtex/2a2032a40e4fdc02434bafab92e2110ae/jaspervh}, citeulike-article-id = {7893078}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/physrevd.65.054005}, doi = {10.1103/physrevd.65.054005}, interhash = {bce51816db3832088ac5836563a4df11}, intrahash = {a2032a40e4fdc02434bafab92e2110ae}, journal = {Physical Review D}, keywords = {color\_superconductivity, gap}, month = jan, number = 5, pages = {054005+}, posted-at = {2010-09-23 23:16:30}, priority = {1}, publisher = {American Physical Society}, timestamp = {2014-01-09T15:14:33.000+0100}, title = {How the quark self-energy affects the color-superconducting gap}, url = {http://dx.doi.org/10.1103/physrevd.65.054005}, volume = 65, year = 2002 }