Muneto’Ni*a(新田宗土yasutake/matter/nitta.pdf11. with Cipriani,Vinci, arXiv:1208.5704...
Transcript of Muneto’Ni*a(新田宗土yasutake/matter/nitta.pdf11. with Cipriani,Vinci, arXiv:1208.5704...
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Muneto Ni*a(新田宗土) (Keio U./慶應義塾大学)
2012年11月20日@千葉工業大学
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1. with Nakano,Matsuura, Phys.Rev.D78:045002,2008 [arXiv:0708.4096] 2. with Eto, Phys.Rev.D80:125007,2009 [arXiv:0907.1278] 3. with Eto,Nakano, Phys.Rev.D80:125011,2009 [arXiv:0908.4470] 4. with Eto,Yamamoto, Phys.Rev.Lett.104:161601,2010 [arXiv:0912.1352] 5. with Yasui,Itakura, Phys.Rev.D81:105003,2010 [arXiv:1001.3730] 6. with Hirono,Kanazawa, Phys.Rev.D83:085018,2011 [arXiv:1012.6042] 7. with Eto,Yamamoto, Phys.Rev.D83:085005,2011 [arXiv:1101.2574] 8. with Fujiwara,Fukui,Yasui, Phys.Rev.D84:076002,2011 [arXiv:1105.2115] 9. with Hirono, Phys.Rev.Lett.109:062501,2012 [arXiv:1203.5059] 10. with Vinci,Cipriani, Phys.Rev.D86:085018, 2012 [arXiv:1206.3535] 11. with Cipriani,Vinci, arXiv:1208.5704
仲野英司(高知大), 松浦妙子(北大), 衛藤稔(山形大), 山本直希(INS, Seatle), 安井繁宏(KEK) , 板倉数記(KEK), 広野雄士(東大/理研), 金澤拓也, 藤原高徳(茨城大), 福井隆裕(茨城大), Walter Vinci(Pisa), Mattia Cipriani(Pisa)
青=ハドロン・原子核、緑=素粒子、赤=物性
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Zwierlein, Abo-Shaeer, Schirotzek, Schunck
& Ketterle Nature 435, 1047-1051 (23 June 2005)
BEC/BCS Crossover
Abo-Shaeer, Raman, Vogels, Ketterle, Science 292, 476-479 (2001)
Vortex nucleation in superfluid under rotation Ultracold
atomic BEC
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http://ltp.phys. titech.ac.jp /vormat.htm
Conventional supercond
High Tc supercond
Abrikosov vortex lattice
Superconductors in magnetic field
Vortex Flux tube
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Proton super- conductor
Neutron superfluid
Rotation
Magnetic field
Core Nuclear matter
Superfluid vortices
vortices (Flux tubes)
Baym&Pines (‘60s) Anderson&Itoh (‘75)
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from Fukushima & Hatsuda Rept.Prog.Phys. 74 (2011) 014001
Topic in this talk
Purpose: Suppose that quark matter is realized in neutron star cores.
Then, what happens? Confirm/deny it.
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“Color superconductor” @ high density
i = u,d,s flavor(global) SU(3) α = r,g,b color(gauge) SU(3)
quarks
3x3 matrix
Quantum Chromo Dynamics (QCD)
Alford-Rajagopal- Wilczek(‘98)
Quark matter
from Fukushima & Hatsuda Rept.Prog.Phys. 74 (2011) 014001
Color-flavor locked (CFL) phase
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Color superconductor
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Ground state
color superconductivity
Color superconductor
superfluidity
color-flavor locked (CFL)
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Integer quantized superfluid
vortex
Color superconductor
Iida & Baym, Forbes & Zhitnitsky(‘02)
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1/3 quantized vortex
Color superconductor
Balachandran, Digal & Matsuura (BDM) (‘05) Nakano, MN & Matsuura (‘07), Eto & MN (‘09)
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1/3 quantized vortex
Eto & MN (‘09)
Profiles
Gauge field
trace traceless
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1/3 quantized SU(3) color
color flux tube
1/3 quantized vortex
Superfluid vortex Non-Abelian vortex
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1/3 quantized SU(3) color
1/3 quantized vortex
color flux tube Superfluid vortex Non-Abelian vortex
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1/3 quantized SU(3) color
1/3 quantized vortex
color flux tube Superfluid vortex Non-Abelian vortex
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1/3 quantized SU(3) color
1/3 quantized vortex
color flux tube Superfluid vortex Non-Abelian vortex
Comment Non-Abelian vortices were discovered earlier in the context of Supersymmetry and String theory (‘03)
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Color Fluxes
Non-Abelian vortices
Abelian vortex
Which are energetically favored?
No flux
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Color Fluxes
Non-Abelian vortices
Abelian vortex No flux
Split = =
Nakano, MN & Matsuura (‘07)
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Abrikosov vortex lattice
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Colorful vortex lattice
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Colorful vortex lattice
Google画像検索 “カラフル 水玉”
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Colorful vortex lattice
Total number of vortices
Intervortex spacing
In a neutron star
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Cipriani,Vinci & MN, in preparation
Colorful vortex lattice
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@ vortex core Nambu-Goldstone modes localized around the vortex
= Gapless modes propagating along the vortex line
“ground state” fluctuations
Eto,Nakano&MN(’09)
1+1 dim effective theory
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correspond to color fluxes
Orientational moduli
“toric diagram”
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What we have found so far
6.Quark bound states Yasui,Itakuta&MN (’10) Index theorem Fujiwara,Fukui,MN&Yasui (’11) Non-Abelian statistics Yasui,Itakuta&MN(’11), Hirono,Yasui,Itakura&MN(‘12)
1.Interaction between vortices Nakano,MN&Matsuua (‘07)
5.Quantum mechanically induced potential monopole-anti-monopole confined by a vortex Eto,MN&Yamamoto, Shifman&Yung (‘11)
3.Interaction with quasi-particles (U(1)B phonon, gluons) Hirono,Kanazawa&MN (‘11) 4.Interaction with U(1)EM gauge field Vinci,Cipriani&MN(‘12), Hirono&MN (‘12)
2.Inclusion of strange quark mass decay into one kind Eto,MN&Yamamoto(‘09)
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Duality transformation (electric⇔magnetic)
Interaction of vortex with quasi-particles
Interaction with massive gluons (non-Abelian 2-form of Freedman-Townsend)
Interaction with phonon [U(1)B Nambu-Goldstone boson]
Hirono, Kanazawa & MN, PRD83:085018,2011 [arXiv:1012.6042]
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Electric & Magnetic U(1)EM interaction In the ground state, photon-gluon mixing occurs:
massive massless
u: 2e/3, d: -e/3, s: -e/3
charge matrix acting from right
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Stable E&M induced potential
U(1)EM flux Electric & Magnetic U(1)EM interaction In the ground state, photon-gluon mixing occurs:
massive massless
Meta- stable
Vinci,Cipriani&MN, PRD86:085018,2012 [arXiv:1206.3535]
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U(1)EM flux However, this potential is washed out by strange quark mass.
However, very small~O(1)G, which cannot be used for NS
Electric & Magnetic U(1)EM interaction
Vinci,Cipriani&MN, PRD86:085018,2012 [arXiv:1206.3535]
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Other interesting phenomena 1. Colored Monopoles at Boojums Cipriani,Vinci & MN, arXiv:1208.5704
2. Compact Stars as Cosmic Polarizers Hirono &MN, Phys.Rev.Lett.109:062501,2012 [arXiv:1203.5059]
Electric & Magnetic U(1)EM interaction
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What is Boojum?
Boojum trees in Arizona Boojum
“The Hunting Of Snark” Lewis Carroll A particularly dangerous
kind of Snark
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Boojums on the container wall in superfluid 3He-A
Boojum in liquid crystal
Boojums in 3He A-B phase boundary
Boojum in two component BECs Kasamatsu-Takeuchi- MN-Tsubota, JHEP1011:068,2010 [arXiv:1002.4265]
What is Boojum?
In physics, named by D.Mermin (1976)
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Neutron boojum = Colorful boojum
Proton boojum
Cipriani,Vinci & MN, arXiv:1208.5704
Boojums at interface of nuclear matter/quark matter
Dirac monopole Confined color monopoles
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Neutron boojum = Colorful boojum
Quark matter
Nuclear matter
Cipriani,Vinci & MN, arXiv:1208.5704
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Cosmic polarizer
modes are electrically charged
Electric fields
In
Out Polarized!!
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Fermions trapped inside a vortex core
@ vortex core
Triplet Majorana fermion protected by SO(3)
Yasui, Itakura & MN, Phys.Rev.D81,105003(2010) [arXiv:1001.3730]
Index theorem Fujiwara,Fukui,MN&Yasui (’11) Non-Abelian statistics Yasui,Itakuta&MN(’11), Hirono,Yasui,Itakura&MN(‘12) These fermions are important for transportation coeff. of quasi-particles.
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If quark matter (CFL phase) is realized in neutron star core, non-Abelian vortices (color flux tubes) must be created and constitute a colorful lattice.
Discussion What is an observational signal? Confirm/deny quark matter.
Conclusion
1.The existence of vortex lattice implies: * Lattice oscillation: Tkachenko, Kelvin modes * Transportation of particles, anisotropic neutrino emission? * EOS more stiff (?): anisotropic pressure? 2. Its rigid rotation yields gravitational wave radiation(?)
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Landau-Ginzburg model from QCD Iida&Baym(‘01) Giannakis&Ren(‘02) Iida,Matsuura, Tachibana&Hatsuda(‘04)
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Effective action on a vortex
Nambu-Goldstone modes localized around the vortex = Gapless modes propagating along the vortex line
Eto,Nakano&MN(’09)
1+1 dim. world-sheet theory
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Gluon mass
Vortex Tension
Dependence of vortex tension of gluon mass
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Decay probability of metastable CP1 vortices
very small probability
Vinci,Cipriani&MN, Phys.Rev. D86:085018,2012[arXiv:1206.3535]
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Fermions trapped inside a vortex core
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T.Fujiwara, T.Fukui, MN, S.Yasui, PRD84,076002 (2011) [arXiv:1105.2115]
triplet doublet singlet
Majorana zero modes
q Q 2Q
triplet doublet singlet
1 0 0
Q=0 q=1
index
Index therem for fermion zero modes
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Ivanov’s matrices
NEW
Exchange statistics of NA Majorana fermion
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(n=4,Type A3)
N-‐simplex and Coxeter group are hidden in the Hilbert space !!
Coxeter group