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9 papers · 2 filters
A perturbative renormalization group approach to light-front Hamiltonian
Takanori Sugihara, Masanobu Yahiro
A perturbative renormalization group (RG) scheme for light-front Hamiltonian is formulated on the basis of the Bloch-Horowitz effective Hamiltonian, and applied to the simplest $ϕ^…
Mesons in the massive Schwinger model on the light-cone
koji Harada, Atsushi Okazaki, Masa-aki Taniguchi
We investigate mesons in the bosonized massive Schwinger model in the light-front Tamm-Dancoff approximation in the strong coupling region. We confirm that the three-meson bound st…
Coherent states over Grassmann manifolds and the WKB-exactness in path integral
Kazuyuki Fujii, Taro Kashiwa, Seiji Sakoda
\(\Un{N}\) coherent states over Grassmann manifold, \(\grsmn{N}{n}\simeq\Un{N}/ (\Un{n}\times \Un{N-n})\), are formulated to be able to argue the WKB-exactness, so called the local…
A General Form of the Constraints in the Path Integral Formula
Taro KASHIWA
A form of the constraints, specifying a -dimensional manifold embedded in dimensional Euclidean space, is discussed in the path integral formula given by a time discretiza…
Crystalline Spinon Basis for RSOS Models
Atsushi Nakayashiki, Yasuhiko Yamada
The crystalline spinon basis for the RSOS models associated with is studied. This basis gives fermionic type character formulas for the branching coefficients of t…
More about Path Integral for Spin
Kunio Funahashi, Taro Kashiwa, Shuji Nima +1
Path integral for the spin system is reconsidered. We show that the Nielsen-Rohrlich(NR) formula is equivalent to the spin coherent state expression so that the phase space…