Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Leung, Rahim"'
Autor:
Leung, Rahim, Stelle, K. S.
Deriving an effective massless field theory for fluctuations about a braneworld spacetime requires analysis of the transverse-space-wavefunction's second-order differential equation. There can be two strikingly different types of effective theory. Fo
Externí odkaz:
http://arxiv.org/abs/2311.04209
String compactifications typically require fluxes, for example in order to stabilise moduli. Such fluxes, when they thread internal dimensions, are topological in nature and take on quantised values. This poses the puzzle as to how they could arise i
Externí odkaz:
http://arxiv.org/abs/2209.08960
Autor:
Leung, Rahim, Stelle, K. S.
Supergravity brane solutions allow for a generalised type of Kaluza-Klein reduction onto brane worldvolumes. The known replacement of a flat worldvolume metric by a Ricci-flat metric constitutes a consistent Kaluza-Klein truncation of the starting hi
Externí odkaz:
http://arxiv.org/abs/2205.13551
Autor:
Cheung, K. C. Matthew, Leung, Rahim
In this note, we construct explicit Type IIA uplifts of $D=5$ minimal gauged supergravity, by T-dualising known Type IIB uplifts on $N_5 = S^5$, $T^{1,1}$ and $Y^{p,q}$ along their $SU(2)$ isometries. When the $D=5$ gauge field is set to zero, our up
Externí odkaz:
http://arxiv.org/abs/2203.15114
Reduction in effective spacetime dimensionality can occur in field-theory models more general than the widely studied dimensional reductions based on technically consistent truncations. Situations where wavefunction factors depend nontrivially on coo
Externí odkaz:
http://arxiv.org/abs/2202.00017
Generating an effective theory of lower-dimensional gravity on a submanifold within an original higher-dimensional theory can be achieved even if the reduction space is non-compact. Localisation of gravity on such a lower-dimensional worldvolume can
Externí odkaz:
http://arxiv.org/abs/2110.10688
Autor:
Cheung, K. C. Matthew, Leung, Rahim
We construct consistent Kaluza-Klein truncations of type IIA supergravity on (i) $\Sigma_2\times S^3$ and (ii) $\Sigma_3\times S^3$, where $\Sigma_2 = S^2/\Gamma$, $\mathbb{R}^2/\Gamma$, or $\mathbb{H}^2/\Gamma$, and $\Sigma_3 = S^3/\Gamma$, $\mathbb
Externí odkaz:
http://arxiv.org/abs/2106.11318
Reduction from a higher-dimensional to a lower-dimensional field theory can display special features when the zero-level ground state has nontrivial dependence on the reduction coordinates. In particular, a delayed `covert' form of spontaneous symmet
Externí odkaz:
http://arxiv.org/abs/2007.12192
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