Results 51 to 60 of about 130,847 (255)

Positivity of the Veneziano amplitude in D = 4

Journal of High Energy Physics, 2022
The Veneziano amplitude was put forward as a solution to the axioms of the S-matrix bootstrap. However, unitarity, reflected in the positivity of the coefficients in the Gegenbauer expansion of the amplitude is not obvious.
Pronobesh Maity
doaj   +1 more source

Bosonic string algebras

Physics Letters B, 1985
We discuss some aspects of symmetry breakings in string theories. We mainly focus on the algebra of bosonic strings, but suspect similar ideas may be used for superstring theories. We point out a curious relation between the partition function of certain bosonic string theories and superstring theories.
C. Vafa, E. Witten
openaire   +1 more source

Cutting the Coon amplitude

Journal of High Energy Physics, 2023
The Coon amplitude is a q-deformed generalization of the Veneziano amplitude exhibiting a semi-infinite sequence of poles that converge on an accumulation point, from which a branch cut emerges. A number of recent papers have provided compelling evidence
Christian Baadsgaard Jepsen
doaj   +1 more source

Two-point string amplitudes

Journal of High Energy Physics, 2019
We show that the two-point tree level amplitude in string theory in flat space is given by the standard free particle expression.
Harold Erbin, Juan Maldacena, Dimitri Skliros   +2 more
doaj   +1 more source

Fermions in bosonic string theories [PDF]

Journal of High Energy Physics, 2001
25 pages, 2 figs, harvmac ; v2, minor modifications, references ...
David, Justin R., Minwalla, Shiraz, Nunez, Carlos   +2 more
openaire   +2 more sources

Pinching parameters for open (super) strings

Journal of High Energy Physics, 2018
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 ...
Sam Playle, Stefano Sciuto
doaj   +1 more source

Canonical analysis of new non-relativistic string action and uniform light-cone gauge formulation

Journal of High Energy Physics, 2021
We perform canonical analysis of new non-relativistic string action that was found recently in [32]. We also discuss its gauge fixed form.
J. Klusoň
doaj   +1 more source

Note about T-duality of non-relativistic string

Journal of High Energy Physics, 2019
In this note we perform canonical analysis of T-duality for non-relativistic string in stringy Newton-Cartan background. We confirm recent result that T-duality along longitudinal spatial direction of stringy Newton-Cartan geometry maps non-relativistic ...
J. Klusoň
doaj   +1 more source

Plahte diagrams for string scattering amplitudes

Journal of High Energy Physics, 2021
Plahte identities are monodromy relations between open string scattering amplitudes at tree level derived from the Koba-Nielsen formula. We represent these identities by polygons in the complex plane.
Pongwit Srisangyingcharoen, Paul Mansfield   +1 more
doaj   +1 more source

Higher-spin Realisations of the Bosonic String [PDF]

, 1995
It has been shown that certain $W$ algebras can be linearised by the inclusion of a spin--1 current. This provides a way of obtaining new realisations of the $W$ algebras.
Lu, H., Pope, C. N., Xu, K. W.
core   +2 more sources