1 / 14

Phase Diagram and Instability of Dense Neutral Quark Matter

Phase Diagram and Instability of Dense Neutral Quark Matter. Kenji Fukushima ( RIKEN BNL Research Center) Ref: K.Fukushima, Phys.Rev.D72 : 074002 (2005) hep-ph/0510299. Phase Diagram at High Density. hep-ph/0510299. Our Goal --- Instability.

glenda
Download Presentation

Phase Diagram and Instability of Dense Neutral Quark Matter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Phase Diagram and Instabilityof Dense Neutral Quark Matter Kenji Fukushima(RIKEN BNL Research Center) Ref: K.Fukushima, Phys.Rev.D72 : 074002 (2005) hep-ph/0510299

  2. Phase Diagram at High Density hep-ph/0510299

  3. Our Goal --- Instability hep-ph/0510299

  4. Cooper Pairing Patterns Diquark Condensate Color-Flavor Locking Anti-symmetric in Color (attractive in OGE) Anti-symmetric in Flavor, Positive Parity (energetically) Anti-symmetric in Spin analogous to the 3He B phase

  5. Family of Color Superconductors

  6. Effect of Non-Zero Ms s quark Fermi Surface Mismatch u or d quark

  7. Gapless Superconductor Gapless dispersion appearswhen CFL gapless CFL (gCFL) This happens for D1 pairing,which makes D1 disfavored. D1 melts first uSC bd-gs (D1) gapless rs-bu (D2) gapless (quadratic)

  8. dSC near Tc Electric neutrality with d u D2 vanishes first dSC s

  9. Phase Diagram at High Density hep-ph/0510299

  10. Chromomagnetic Instability • Meissner Screening Mass Meissner mass is the screening mass for the transverse gluons. Meissner mass is imaginary in the gapless phases Shovkovy-Huang Gapless Quarks near the gCFL onset Fukushima, PRD72 : 074002 (2005)

  11. Unstable Gluons near gCFL A1,2 gluons l1 in color space red-green A3,8 gluons (photon) same colors bd-gs (D1) gapless rs-bu (D2) gapless (quadratic)

  12. Instability Regions Quadratic quarks in the whole gCFL regionEasily affected by the temperature effects hep-ph/0510299

  13. Colored Crystalline Phase Instability for Ai = Instability for qi(Giannakis-Ren) Five variational parameters are needed Rotational symmetry is broken Crystalline Superconducting Phase (Covariant Derivative qi+Ai) A1,2 A4,5 A6,7 A3 A8 Calculations are technically very difficult.

  14. Summary • The QCD phase diagram in the high density region has the CFL, uSC, dSC phases. • uSC comes out as a remnant of the gCFL phase. • dSC results from the Fermi surface ordering. • The chromomagnetic instability occurs for A1,2 and A3,8 near the gCFL onset. • Quadratic quarks cause the instability. • Colored Crystalline Phase…How?

More Related