Results 31 to 40 of about 63,915 (257)

Rational string topology

Journal of the European Mathematical Society, 2007
We use the computational power of rational homotopy theory to provide an explicit cochain model for the loop product and the string bracket of a 1-connected closed manifold M . We prove that the loop homology of
Félix, Yves, Thomas, Jean-Claude, Vigué-Poirrier, Micheline   +2 more
openaire   +4 more sources

Topological G2 and Spin(7) strings at 1-loop from double complexes

Journal of High Energy Physics, 2022
We study the topological G 2 and Spin(7) strings at 1-loop. We define new double complexes for supersymmetric NSNS backgrounds of string theory using generalised geometry.
Anthony Ashmore, André Coimbra, Charles Strickland-Constable, Eirik Eik Svanes, David Tennyson   +4 more
doaj   +1 more source

Topological amplitudes in string theory [PDF]

Nuclear Physics B, 1994
We show that certain type II string amplitudes at genus $g$ are given by the topological partition function $F_g$ discussed recently by Bershadsky, Cecotti, Ooguri and Vafa. These amplitudes give rise to a term in the four-dimensional effective action of the form $\sum_g F_g W^{2g}$, where $W$ is the chiral superfield of $N=2$ supergravitational ...
Antoniadis, I., Gava, E., Narain, K. S., Taylor, T. R.   +3 more
openaire   +2 more sources

All Loop N=2 String Amplitudes [PDF]

, 1995
Using the N=4 topological reformulation of N=2 strings, we compute all loop partition function for special compactifications of N=2 strings as a function of target moduli.
Ademollo, Ademollo, Belavin, Berkovits, Berkovits, Bershadsky, Bershadsky, Bruth, Cordes, Cordes, Corvi, Cumrun Vafa, D'Adda, Dixon, Douglas, Greene, Gross, Gross, Hirosi Ooguri, Hitchin, Hyun, Marcus, Mathur, Migdal, Moore, Ohta, Ooguri, Ooguri, Park, Seiberg, Siegel, Witten, Witten, Witten, Witten   +34 more
core   +3 more sources

D=5 holomorphic Chern-Simons and the pure spinor superstring

Journal of High Energy Physics, 2023
The physical states of D=5 holomorphic Chern-Simons theory correspond to on-shell D=10 open superstring states in the cohomology of q +, where q + is one of the 16 spacetime supersymmetry generators.
Nathan Berkovits
doaj   +1 more source

Refined topological amplitudes from the Ω-background in string theory

Journal of High Energy Physics, 2022
It was recently shown that the N $$ \mathcal{N} $$ = 2 string topological amplitudes in the heterotic weak coupling limit generate a six-dimensional Melvin space, providing a description of the Ω-background in string theory, where string propagation can ...
Carlo Angelantonj, Ignatios Antoniadis, Ioannis Florakis, Hongliang Jiang   +3 more
doaj   +1 more source

Charged Black Cosmic String [PDF]

, 1997
Global U(1) strings with cylindrical symmetry are studied in anti-de Sitter spacetime. According as the magnitude of negative cosmological constant, they form regular global cosmic strings, extremal black cosmic strings and charged black cosmic strings ...
Bañados M, Chan K C K, Clement G, Deser S, Hindmarsh M B, Kyoungtae Kimm, Nakwoo Kim, Vilenkin A, Yoonbai Kim   +8 more
core   +3 more sources

The Topological Open String Wavefunction [PDF]

Communications in Mathematical Physics, 2015
30 pages, 4 figures; v2: misprints ...
Grassi Alba, Käll{é}n Johan, Marino Marcos   +2 more
openaire   +4 more sources

Deformations of topological open strings [PDF]

Journal of High Energy Physics, 2001
LaTeX 30 pages, corrected ...
Hofman, C., Ma, W.K.
openaire   +4 more sources

Transplanckian censorship and global cosmic strings

Journal of High Energy Physics, 2017
Large field excursions are required in a number of axion models of inflation. These models also possess global cosmic strings, around which the axion follows a path mirroring the inflationary trajectory. Cosmic strings are thus an interesting theoretical
Matthew J. Dolan, Patrick Draper, Jonathan Kozaczuk, Hiren Patel   +3 more
doaj   +1 more source