Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Olaf Hohm"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-50 (2024)
Abstract We give an interpretation of holography in the form of the AdS/CFT correspondence in terms of homotopy algebras. A field theory such as a bulk gravity theory can be viewed as a homotopy Lie or L ∞ algebra. We extend this dictionary to theo
Externí odkaz:
https://doaj.org/article/fffb8a311a6145f7870deb2201dc322a
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-51 (2024)
Abstract We provide a formulation of quantum mechanics based on the cohomology of the Batalin-Vilkovisky (BV) algebra. Focusing on quantum-mechanical systems without gauge symmetry we introduce a homotopy retract from the chain complex of the harmoni
Externí odkaz:
https://doaj.org/article/73d5e60710b4403891e7a8fd9cf0abc8
Autor:
Olaf Hohm, Allison F. Pinto
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 4, Pp 1-35 (2023)
Abstract We explore perturbative double field theory about time-dependent (cosmological) backgrounds to cubic order. To this order the theory is consistent in a weakly constrained sense, so that for a toroidal geometry it encodes both momentum and ge
Externí odkaz:
https://doaj.org/article/54d0941f46d04729bd9808f0f47e4699
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-21 (2022)
Abstract We give a linearized but otherwise complete supersymmetric action for N $$ \mathcal{N} $$ = (4, 0) supergravity in six dimensions, using a Kaluza-Klein-type 5 + 1 split of coordinates and fields. We provide in particular a significantly simp
Externí odkaz:
https://doaj.org/article/9f5fcaff7164412b8ad6b4924c84baf1
Publikováno v:
Symmetry, Vol 15, Iss 11, p 2062 (2023)
This essay’s title is justified by discussing a class of Yang–Mills-type theories of which standard Yang–Mills theories are special cases but which is broad enough to include gravity as a double field theory. We use the framework of homotopy al
Externí odkaz:
https://doaj.org/article/2908b27d84304d9c9d1a42d0285b281b
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-35 (2022)
Abstract We compute, for cosmological backgrounds, the O(d, d; ℝ) invariant beta functions for the sigma model of the bosonic string at two loops. This yields an independent first-principle derivation of the order α′ corrections to the cosmologi
Externí odkaz:
https://doaj.org/article/eebc848df92a4c1b98d614252ea4c231
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-49 (2021)
Abstract The O(d, d) invariant worldsheet theory for bosonic string theory with d abelian isometries is employed to compute the beta functions and Weyl anomaly at one-loop. We show that vanishing of the Weyl anomaly coefficients implies the equations
Externí odkaz:
https://doaj.org/article/3e3df767f7bc481b87728e34778e8fc1
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-48 (2021)
Abstract We show that the perturbative expansion of general gauge theories can be expressed in terms of gauge invariant variables to all orders in perturbations. In this we generalize techniques developed in gauge invariant cosmological perturbation
Externí odkaz:
https://doaj.org/article/03bd96d7fe2e45e79213a59d70f35fff
Autor:
Olaf Hohm, Henning Samtleben
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 4, Pp 1-33 (2019)
Abstract We present a Lagrangian formulation for N $$ \mathcal{N} $$ = 8 superconformal field theories in three spacetime dimensions that is general enough to encompass infinite-dimensional gauge algebras that generally go beyond Lie algebras. To thi
Externí odkaz:
https://doaj.org/article/1596b1d80b934c4bb8a43fcb58e25c4c
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-42 (2017)
Abstract Double field theory yields a formulation of the low-energy effective action of bosonic string theory and half-maximal supergravities that is covariant under the T-duality group O(d, d) emerging on a torus T d . Upon reduction to three spacet
Externí odkaz:
https://doaj.org/article/348ff48824ad4f388d7ad7d52898d903