Phys. Rev. Lett. 96, 012305 (2006) [4 pages]
Meson Supercurrent State in High-Density QCD
Abstract
References (27)
Citing Articles
T. SchäferDepartment of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
Received 31 August 2005; published 12 January 2006
The ground state of three flavor quark matter at asymptotically large density is believed to be the color-flavor-locked (CFL) phase. At nonasymptotic density the effect of the nonzero strange quark mass cannot be neglected. If the strange quark mass exceeds ms~m  2/3, the CFL state becomes unstable toward the formation of a neutral kaon condensate. Recently, several authors discovered that for ms~(2pF)1/2 the CFL state contains gapless fermions, and that the gapless modes lead to an instability in current-current correlation functions. Using an effective theory of the CFL state, we demonstrate that this instability can be resolved by the formation of a meson supercurrent, analogous to Migdal's p-wave pion condensate. This state has a nonzero meson current that is canceled by a backflow of gapless fermions.
©2006 The American Physical Society
REFERENCES (27)
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- T. Schäfer and F. Wilczek, Phys. Rev. D 60, 074014 (1999);
A. W. Steiner, S. Reddy, and M. Prakash, Phys. Rev. D 66, 094007 (2002);
- D. B. Kaplan and S. Reddy, Phys. Rev. D 65, 054042 (2002);
A. Kryjevski, D. B. Kaplan, and T. Schäfer, Phys. Rev. D 71, 034004 (2005).
- T. Schäfer, Phys. Rev. D 65, 094033 (2002);
- M. Alford, C. Kouvaris, and K. Rajagopal, Phys. Rev. Lett. 92, 222001 (2004);
M. Alford, C. Kouvaris, and K. Rajagopal, Phys. Rev. D 71, 054009 (2005).
- A. Kryjevski and D. Yamada, Phys. Rev. D 71, 014011 (2005).
- S.-T. Wu and S. Yip, Phys. Rev. A 67, 053603 (2003).
- M. Huang and I. A. Shovkovy, Phys. Rev. D 70, 051501 (2004).
- K. Fukushima, Phys. Rev. D 72, 074002 (2005);
- S. Reddy and G. Rupak, Phys. Rev. C 71, 025201 (2005).
- M. G. Alford, J. A. Bowers, and K. Rajagopal, Phys. Rev. D 63, 074016 (2001);
J. A. Bowers and K. Rajagopal, Phys. Rev. D 66, 065002 (2002).
- R. F. Sawyer, Phys. Rev. Lett. 29, 382 (1972);
D. J. Scalapino, Phys. Rev. Lett. 29, 386 (1972).
- T. Schäfer and F. Wilczek, Phys. Rev. Lett. 82, 3956 (1999).
- D. T. Son and M. Stephanov, Phys. Rev. D 61, 074012 (2000).
- G. Baym, Phys. Rev. Lett. 30, 1340 (1973).
- M. M. Forbes, Phys. Rev. D 72, 094032 (2005).
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