Results 21 to 30 of about 450,967 (224)

String theory in electromagnetic fields [PDF]

open access: yesJournal of High Energy Physics, 2003
A review of various aspects of superstrings in background electromagnetic fields is presented. Topics covered include the Born-Infeld action, spectrum of open strings in background gauge fields, the Schwinger mechanism, finite-temperature formalism and Hagedorn behaviour in external fields, Debye screening, D-brane scattering, thermodynamics of D ...
Jan Ambjørn   +3 more
openaire   +4 more sources

N-String Vertices in String Field Theory [PDF]

open access: yes, 1993
We give the general form of the vertex corresponding to the interaction of an arbitrary number of strings. The technique employed relies on the ``comma" representation of String Field Theory where string fields and interactions are represented as ...
A. Abdurrahman   +18 more
core   +2 more sources

Aspects of Nonrelativistic Strings

open access: yesFrontiers in Physics, 2022
We review recent developments on nonrelativistic string theory. In flat spacetime, the theory is defined by a two-dimensional relativistic quantum field theory with nonrelativistic global symmetries acting on the worldsheet fields.
Gerben Oling, Gerben Oling, Ziqi Yan
doaj   +1 more source

Classical open string amplitudes from boundary string field theory

open access: yesJournal of High Energy Physics, 2019
We calculate the corrections to the open string BRST charge in boundary string field theory and show that the expansion coefficients agree with the perturbative S-matrix to all orders.
Christoph Chiaffrino, Ivo Sachs
doaj   +1 more source

The ZZ annulus one-point function in non-critical string theory: A string field theory analysis

open access: yesJournal of High Energy Physics, 2022
We compute the ZZ annulus one-point function of the cosmological constant operator in non-critical string theory, regulating divergences from the boundaries of moduli space using string field theory.
Dan Stefan Eniceicu   +4 more
doaj   +1 more source

String theory or field theory? [PDF]

open access: yesPhysics-Uspekhi, 2002
The status of string theory is reviewed, and major recent developments - especially those in going beyond perturbation theory in the string theory and quantum field theory frameworks - are discussed. This analysis helps better understand the role and place of string theory in the modern picture of the physical world.
openaire   +4 more sources

String Webs from Field Theory [PDF]

open access: yes, 2001
The spectrum of stable electrically and magnetically charged supersymmetric particles can change discontinuously as one changes the vacuum on the Coulomb branch of gauge theories with extended supersymmetry in four dimensions.
Argyres, Philip C., Narayan, K.
core   +2 more sources

Lattice String Field Theory [PDF]

open access: yesProceedings of The XXVIII International Symposium on Lattice Field Theory — PoS(Lattice 2010), 2011
7 pages, 2 figures. To appear in the Proceedings of the XXVIIIth International Symposium on Lattice Field Theory (Lattice 2010), Villasimius, Italy, June 14-19 ...
Francis Bursa, Michael Kroyter
openaire   +2 more sources

Generation flow in field theory and strings [PDF]

open access: yesJournal of High Energy Physics, 2021
AbstractNontrivial strong dynamics often leads to the appearance of chiral composites. In phenomenological applications, these can either play the role of Standard Model particles or lift chiral exotics by partnering with them in mass terms. As a consequence, the RG flow may change the effective number of chiral generations, a phenomenon we call ...
Saúl Ramos-Sánchez   +4 more
openaire   +5 more sources

Space-Time Noncommutative Field Theories And Unitarity [PDF]

open access: yes, 2000
We study the perturbative unitarity of noncommutative scalar field theories. Field theories with space-time noncommutativity do not have a unitary S-matrix. Field theories with only space noncommutativity are perturbatively unitary.
Abouelsaood   +35 more
core   +3 more sources

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