Bethe-Salpeter equation
Minkowski space approach for the Bethe-Salpeter equation
... the Bethe-Salpeter equation in 3 + 1 space-time dimensions, considering the s-wave state in the ladder approximation, using the Nakanishi integral ...the Bethe-Salpeter approach are in ...
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Mass spectra of heavy pseudoscalars using instantaneous Bethe Salpeter equation with different kernels
... instantaneous Bethe–Salpeter equation for heavy pseudoscalars in different kernels, where the kernels are obtained using linear scalar potential plus one gluon exchange vector potentials in Feynman ...
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View metadata, citation and similar papers at core.ac.uk. Mesons with a light quark-antiquark pair and the Bethe-Salpeter equation
... The Bethe-Salpeter equation, written to lowest order in the perturbative expansion, is used to extract information about quark-antiquark scattering near resonance ...full Bethe-Salpeter ...
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Cubic-scaling iterative solution of the Bethe-Salpeter equation for finite systems
... IV. CONCLUSIONS We have described, and implemented, an iterative scheme to compute the optical response of molecular systems at the Bethe-Salpeter level, using local basis sets. We go beyond the ...
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Optical properties of Cu-chalcogenide photovoltaic absorbers from self-consistent GW and the Bethe-Salpeter equation
... [54], this G0 W0 @scCOHSEX approach has been compared to results of the LDA, the G0 W0 @LDA, and the quasiparticle self-consistent GW QPscGW method [55], which is selfconsistent on ener[r] ...
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Janus-Facedness of the Pion: Analytic Instantaneous Bethe–Salpeter Models
... their Bethe–Salpeter amplitudes, Φ (p) , controlled by the homogeneous Bethe–Salpeter equation defined (for two bound particles of individual and relative momenta p 1 , 2 and p) by ...
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Relativistic Three-Nucleon Calculations within the Bethe-Salpeter Approach
... 2 Two particle case Since the formalism of the Faddeev equations is based on the properties of the nucleon-nucleon pair interaction only, the discussion starts with preliminaries of the two-body problem. The ...
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Global Dyson-Schwinger-Bethe-Salpeter Approach to Mesons with Open Flavour
... the Bethe–Salpeter equation enabling us to regard mesons as bound states of quark and antiquark and the Dyson–Schwinger equation controlling the dressed quark propagator, we amend existing ...
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THE SPINLESS SALPETER EQUATION AND MESON DYNAMICS
... ( Gev G Λ MS = potentials and the theoretical results are in general in agreement with the experimental data. The inconsistency in light mesons has the origin in the nonrelativistic treatment of the potential derivations ...
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Is the Bethe–Salpeter Formalism Accurate for Excitation Energies? Comparisons with TD-DFT, CASPT2, and EOM-CCSD ?
... the Bethe-Salpeter equation approach, combined with the GW exchange-correlation self-energy, that maintains the same scaling with system size as TD-DFT, has recently been the focus of a rapidly ...
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Bethe–Salpeter studies of mesons beyond rainbow-ladder
... our Bethe–Salpeter am- plitude, we obtain a two-loop integration kernel that most compilers will baulk at[43, ...our Bethe–Salpeter kernel in spinor space us- ing an explicit matrix ...
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Simplified Bethe-Salpeter Description of Basic Pseudoscalar-Meson Features
... relativistic Bethe–Salpeter description of bound states [5], with several still to be resolved inherent obstacles, and the latter’s extreme instantaneous limit, represented by its three-dimensional ...
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Pseudo-scalar mesons at finite temperatures from a Dyson-Schwinger-Bethe-Salpeter approach
... (gap) equation smoothly interpolating to the T = 0 ...the Bethe- Salpeter vertex function in the pseudo-scalar q¯ q channel for the lowest boson Matsubara frequencies and find a competition of q q ¯ ...
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Investigation on Virtual State Contribution to Gauge Invariant Cross Section of e+e →J/ψ+ηc in Bethe Salpeter Framework
... 1028 mass M . However, in the hard production processes of heavy quarkonium at high energies, the hard scales like the transverse momentum are much larger than M . If there is no well justified factorization formula 1 ...
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Bethe-Salpeter wave functions of ηc(1S, 2S) and ψ(1S, 2S) states: local-potential description of the charmonium system revisited
... 2 Jülich Supercomputing Center, Jülich D-52425, German Abstract. The quark potential models with an energy-independent central potential have been successful for understanding the conventional charmonium states ...
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Chaos in the thermodynamic Bethe ansatz
... • Centre for Mathematical Science, City University, Northampton Square, London EC1V 0HB, UK E-mail: [email protected] Abstract: We investigate the discretized version of the thermodynamic Bethe ansatz ...
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Bethe ansatz for quantum strings
... propose Bethe equations for the diagonalization of the Hamiltonian of quantum strings on AdS 5 × S 5 at large string tension and restricted to certain large charge states from a closed su (2) ...asymptotic ...
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Approximating the Bethe partition function
... The first two problems are related (marginals are a ra- tio of two partition functions). Computing Z belongs to the class of counting problems #P (Valiant, 1979). Fur- ther, exact marginal inference is NP-hard (Cooper, ...
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Supersymmetric vacua and Bethe ansatz
... This note is a short announcement of some results of a longer paper where the supersymmet- ric vacua of two dimensional N = 4 gauge theories with matter, softly broken by the twisted masses down to N = 2, are shown to be ...
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The Salpeter plasma correction for solar fusion reactions
... the Salpeter argument: approximately one-half of the squared Debye wave number D −2 comes from screening by electrons in the plasma and one-half from ...the Salpeter result, with a consequent reduction in ...
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