نتایج جستجو برای: bound state
تعداد نتایج: 1012655 فیلتر نتایج به سال:
We propose an approximate wavefunction of the bound state of N D0-branes. Its spread grows as N Definition of M-theory [1][2] using its ten dimensional compactification requires the knowledge of the behaviour of the Kaluza-Klein modes of the graviton. These are realized as the bound states [3] of D0-branes of Type IIA string theory, originally discovered as the black holes in the supergravity [...
We performed bound state calculations to obtain the first few vibrational states for the Ar3 molecular system. The equations used are of Faddeev-type and are solved directly as threedimensional equations in configuration space, i.e. without resorting to an explicit partial wave decomposition. In addition to realistic pairwise interactions, we employ long range three-body forces. Our results are...
I discuss the bound state quark dynamics focusing on the nonperturbative interaction and the flux tube structure.
We find the spectrum of boundary bound states for the sine-Gordon model with Dirichlet boundary conditions, closing the bootstrap and providing a complete description of all the poles in the boundary reflection factors. The boundary Coleman-Thun mechanism plays an important role in the analysis. Two basic lemmas are introduced which should hold for any 1+1-dimensional boundary field theory, all...
We propose an approximate wavefunction of the bound state of N D0-branes. Its spread grows as N Definition of M-theory [1][2] using its ten dimensional compactification requires the knowledge of the behaviour of the Kaluza-Klein modes of the graviton. These are realized as the bound states [3] of D0-branes of Type IIA string theory, originally discovered as the black holes in the supergravity [...
The first evidence of a deeply bound state of Xi−–14N system K. Nakazawa1,∗, Y. Endo1, S. Fukunaga2, K. Hoshino1, S. H. Hwang3, K. Imai3, H. Ito1, K. Itonaga1, T. Kanda1, M. Kawasaki1, J. H. Kim4, S. Kinbara1, H. Kobayashi1, A. Mishina1, S. Ogawa2, H. Shibuya2, T. Sugimura1, M. K. Soe1, H. Takahashi5, T. Takahashi5, K. T. Tint1, K. Umehara1, C. S. Yoon4, and J. Yoshida1 1Physics Department, Gif...
We suggested that the two resonances at 0.89 and 2.03 MeV above the two-neutron separation threshold have spins and parities of 0+ and 1−. In the Comment, Fortune claims that these states almost unambiguously must be 3− and 4+ states. We work in three-body cluster models with J π = 0+, 1−, 2+ where all three-body continuum structures are included. Fortune bases his assignments on the bound-stat...
We generalize the Jackiw-Rebbi-Hasenfratz-’t Hooft construction of fermions from bosons to demonstrate the fermionic nature of certain bound states involving SU(N) instantons in even spatial dimensions and SO(N) instantons in 8k + 1 spatial dimensions. We use this result to identify several fermionic excitations in various perturbatively bosonic string theories. In some examples we are able to ...
We conduct a search for the He − η bound state with the WASAat-COSY facility via the measurement of the excitation function for the reaction dd → He p π−. In first experiment performed in June 2008, we used COSY deuteron beam with a slowly ramped beam momentum corresponding to a variation of the excess energy for the Heη system from -51.4 MeV to 22 MeV. Here we report on the status of the measu...
We investigate the structure of the scalar mesons f0(975) and a0(980) within realistic meson-exchange models of the ππ and πη interactions. Starting from a modified version of the Jülich model for ππ scattering we perform an analysis of the pole structure of the resulting scattering amplitude and find, in contrast to existing models, a somewhat large mass for the f0(975) (mf0 = 1015 MeV, Γf0 = ...
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