Results 71 to 80 of about 36,361 (168)

STRING THEORY AND UNIFICATION [PDF]

open access: yesPASCOS 2004, 2005
11 pages, 2 figures, talk at PASCOS 2004 / Nath ...
openaire   +2 more sources

Non-Riemannian geometry of M-theory

open access: yesJournal of High Energy Physics, 2019
We construct a background for M-theory that is moduli free. This background is then shown to be related to a topological phase of the E8(8) exceptional field theory (ExFT).
David S. Berman   +2 more
doaj   +1 more source

Symmetry TFTs from String Theory. [PDF]

open access: yesCommun Math Phys, 2023
Apruzzi F   +4 more
europepmc   +1 more source

Introduction to string theory

open access: yesSciPost Physics Lecture Notes
These are lecture notes of the introductory String Theory course held by one of the authors for the master program of Theoretical Physics at Turin University. The world-sheet approach to String Theory is pedagogically introduced in the framework of the bosonic string and of the superstring.
Carlo Maccaferri   +2 more
openaire   +3 more sources

Two-loop scattering amplitudes: double-forward limit and colour-kinematics duality

open access: yesJournal of High Energy Physics, 2019
We propose new formulae for the two-loop n-point D-dimensional integrands of scattering amplitudes in Yang-Mills theory and gravity. The loop integrands are written as a double-forward limit of tree-level trivalent diagrams, and are inferred from the ...
Yvonne Geyer   +2 more
doaj   +1 more source

Supersymmetric AdS$$_2\times \Sigma _2$$ 2×Σ2 solutions from tri-sasakian truncation

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
A class of $$\mathrm{AdS}_2\times \Sigma _2$$ AdS2×Σ2 , with $$\Sigma _2$$ Σ2 being a two-sphere or a hyperbolic space, solutions within four-dimensional $$N=4$$ N=4 gauged supergravity coupled to three-vector multiplets with dyonic gauging is identified.
Parinya Karndumri
doaj   +1 more source

Inflationary string theory? [PDF]

open access: yesPramana, 2004
The inflationary paradigm provides a robust description of the peculiar initial conditions which are required for the success of the Hot Big Bang model of cosmology, as well as of the recent precision measurements of temperature fluctuations within the cosmic microwave background. Furthermore, the success of this description indicates that inflation is
openaire   +2 more sources

Scales of string theory [PDF]

open access: yesClassical and Quantum Gravity, 2000
I review the arguments in favor of/against the traditional hypothesis that the Planck, string and compactification scales are all within a couple of orders of magnitude from each other. I explain how the extreme brane-world scenario, with TeV type I scale and two large (near millimetric) transverse dimensions, creates conditions analogous to those of ...
openaire   +4 more sources

Grassmannian and String Theory [PDF]

open access: yesCommunications in Mathematical Physics, 1998
Infinite-dimensional Grassmannian manifold contains moduli spaces of Riemann surfaces of all genera. This well known fact leads to a conjecture that non-perturbative string theory can be formulated in terms of Grassmannian. We present new facts supporting this hypothesis.
openaire   +3 more sources

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