Zobrazeno 1 - 10
of 46 208
pro vyhledávání: '"Macpherson, A"'
We develop a general framework (multidimensional asymptotic classes, or m.a.c.s) for handling classes of finite first order structures with a strong uniformity condition on cardinalities of definable sets: The condition asserts that definable familie
Externí odkaz:
http://arxiv.org/abs/2408.00102
We study the class of $\text{AdS}_3\times \mathbb{CP}^3$ solutions to massive Type IIA supergravity with $\mathfrak{osp}(6|2)$ superconformal algebra recently constructed in arXiv:2304.12207 [hep-th]. These solutions are foliations over an interval p
Externí odkaz:
http://arxiv.org/abs/2404.17469
Autor:
Macpherson, William, Goodell, Geoffrey
As global governments intensify efforts to operationalize retail central bank digital currencies (CBDCs), the imperative for architectures that preserve user privacy has never been more pronounced. This paper advances an existing retail CBDC framewor
Externí odkaz:
http://arxiv.org/abs/2404.12821
Measurements of the cosmic redshift drift - the change in redshift of a source over time - will enable independent detection of cosmological expansion thanks to the immense precision soon reached by new facilities such as the Square Kilometer Array O
Externí odkaz:
http://arxiv.org/abs/2404.06242
Autor:
Macpherson, Dugald, Tent, Katrin
We explore the interplay between omega-categoricity and pseudofiniteness for groups, conjecturing that omega-categorical pseudofinite groups are finite-by-abelian-by-finite. We show that the conjecture reduces to nilpotent p-groups of class 2, and gi
Externí odkaz:
http://arxiv.org/abs/2403.17684
We apply and extend standard tools for void statistics to cosmological simulations that solve Einstein's equations with numerical relativity (NR). We obtain a simulated void catalogue without Newtonian approximations, using a new watershed void finde
Externí odkaz:
http://arxiv.org/abs/2403.15134
We study marginal deformations of ${\cal N}=2$, $d=4$ long linear quiver CFTs using the holographic description. We find a two-parameter family of AdS$_5$ solutions that generically break all of supersymmetry, but preserve ${\cal N}=1$ for a particul
Externí odkaz:
http://arxiv.org/abs/2403.02380
Autor:
Adamek, Julian, Clarkson, Chris, Durrer, Ruth, Heinesen, Asta, Kunz, Martin, Macpherson, Hayley J.
Publikováno v:
The Open Journal of Astrophysics 7 (2024)
Anisotropies in the distance-redshift relation of cosmological sources are expected due to large-scale inhomogeneities in the local Universe. When the observed sources are tracing a large-scale matter flow in a general spacetime geometry, the distanc
Externí odkaz:
http://arxiv.org/abs/2402.12165
Autor:
Macpherson, Hayley J.
We study the impact of nearby inhomogeneities on an observer's inference of the Hubble constant. Large-scale structures induce a dependence of cosmological parameters on observer position as well as an anisotropic variance of those parameters across
Externí odkaz:
http://arxiv.org/abs/2402.09659
We derive necessary and sufficient conditions for warped AdS$_2$ solutions of Type II supergravity to preserve ${\cal N}=1$ supersymmetry, in terms of bispinors. Such solutions generically support an SU$(3)$-structure on their internal manifold M$_8$
Externí odkaz:
http://arxiv.org/abs/2309.01714