- The University of TokyoJP429 papers
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87 papers · 1 filter
Constant scalar curvature metrics on Hirzebruch surfaces
Nobuhiko Otoba
We construct smooth Riemannian metrics with constant scalar curvature on each Hirzebruch surface. These metrics respect the complex structures, fiber bundle structures, and Lie gro…
Operation of an optically coherent frequency comb outside the metrology lab
Laura C. Sinclair, Ian Coddington, William C. Swann +4
We demonstrate a self-referenced fiber frequency comb that can operate outside the well-controlled optical laboratory. The frequency comb has residual optical linewidths of < 1 Hz,…
Uniform spin susceptibility and spin-gap phenomenon in the BCS-BEC crossover regime of an ultracold Fermi gas
H. Tajima, T. Kashimura, R. Hanai +2
We investigate the uniform spin susceptibility in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover regime of an ultracold Fermi gas. Inclu…
Magnon condensation with finite degeneracy on the triangular lattice
Giacomo Marmorini, Tsutomu Momoi
We study the spin 1/2 triangular-lattice -- antiferromagnet close to the saturation field using the dilute Bose gas theory, where the magnetic structure is determine…
Fermion Actions extracted from Lattice Super Yang-Mills Theories
Tatsuhiro Misumi
We revisit 2D super Yang-Mills lattice formulation (Sugino model) to investigate its fermion action with two (Majorana) fermion flavors and exact chiral-$U(1)_{…
Phase structure and Hosotani mechanism in QCD-like theory with compact dimensions
Kouji Kashiwa, Hiroaki Kouno, Takahiro Makiyama +3
We investigated the phase diagram of gauge theory in four dimension with one compact dimension by using the perturbative one-loop effective potential. Effects of the adjoin…