Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Stefano Sciuto"'
Autor:
Sam Playle, Stefano Sciuto
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-68 (2018)
Abstract We present an approach to the parametrization of (super) Schottky space obtained by sewing together three-punctured discs with strips. Different cubic ribbon graphs classify distinct sets of pinching parameters; we show how they are mapped o
Externí odkaz:
https://doaj.org/article/1b93a90d6cf443bca8d0a546733b376a
Autor:
Sam Playle, Stefano Sciuto
Publikováno v:
Physics Letters B, Vol 766, Iss C, Pp 317-324 (2017)
A parametrization of (super) moduli space near the corners corresponding to bosonic or Neveu–Schwarz open string degenerations is introduced for worldsheets of arbitrary topology. With this parametrization, Feynman graph polynomials arise as the α
Externí odkaz:
https://doaj.org/article/3436e1cfff014a6785d22314495558df
Autor:
Sam Playle, Stefano Sciuto
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-68 (2018)
Journal of High Energy Physics
Journal of High Energy Physics
We present an approach to the parametrization of (super) Schottky space obtained by sewing together three-punctured discs with strips. Different cubic ribbon graphs classify distinct sets of pinching parameters; we show how they are mapped onto each
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a274d6dc44b8943f5c549159da80540a
http://arxiv.org/abs/1709.10117
http://arxiv.org/abs/1709.10117
Starting fron the N-point vertex on the sphere and using the sewing procedure we construct the N-point g-loop vertex for a free bosonic theory with vacuum charge Q. We then show that, when this vertex is saturated with N highest weight states, it giv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::764c2b8c9ba4c6c9dfce97074a5b508b
https://doi.org/10.1016/0550-3213(89)90419-7
https://doi.org/10.1016/0550-3213(89)90419-7
Autor:
Sam Playle, Stefano Sciuto
Publikováno v:
Physics Letters B
Physics Letters B, Vol 766, Iss C, Pp 317-324 (2017)
Physics Letters B, Vol 766, Iss C, Pp 317-324 (2017)
A parametrization of (super) moduli space near the corners corresponding to bosonic or Neveu-Schwarz open string degenerations is introduced for worldsheets of arbitrary topology. With this parametrization, Feynman graph polynomials arise as the $\al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e31329724472a4e3a75e9d7cc24231a
Publikováno v:
Journal of High Energy Physics
Starting from the superstring amplitude describing interactions among D-branes with a constant world-volume field strength, we present a detailed analysis of how the open string degeneration limits reproduce the corresponding field theory Feynman dia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ca620f5e524cc879ab69cc5350a948f
http://www.openaccessrepository.it/record/10997/files/main.pdf
http://www.openaccessrepository.it/record/10997/files/main.pdf
Autor:
Rodolfo Russo, Stefano Sciuto
Publikováno v:
Fortschritte der Physik. 52:678-683
The bosonization equivalence between the 2-dimensional Dirac and Laplacian operators can be used to derive new interesting identities involving Theta functions. We use these formulae to compute the multiloop partition function of the bosonic open str
Publikováno v:
Scopus-Elsevier
We propose an approach to treat (1+1)--dimensional fermionic systems based on the idea of algebraic bosonization. This amounts to decompose the elementary low-lying excitations around the Fermi surface in terms of basic building blocks which carry a
Publikováno v:
Scopus-Elsevier
We develop an operator formalism to compute scattering amplitudes of arbitrary bosonic string states in the background of many D-branes. Specifically, we construct a suitable boundary state which we use to saturate the multi-Reggeon vertex in order t
Publikováno v:
Journal of Physics A: Mathematical and General. 30:903-914
We give a realization of the quantum affine Lie superalgebras U_q(A(M,N))^(1) in terms of anyons defined on a one or two-dimensional lattice, the deformation parameter q being related to the statistical parameter $\nu$ of the anyons by q = exp(i\pi\n