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We present a code to construct initial data for binary neutron star systems in which the stars are rotating. Our code, based on a formalism developed by Tichy, allows for arbitrary rotation axes of the neutron stars and is able to achieve…

We construct supersymmetric Q-balls and boson stars in (d+1) dimensions. These non-topological solitons are solutions of a scalar field model with global U(1) symmetry and a scalar field potential that appears in gauge-mediated…

High Energy Physics - Theory · Physics 2013-05-30 Betti Hartmann , Juergen Riedel

The slow rotation of some young stars and the extreme rotation periods of some Ap stars have so far defied explanation. The absence of sufficiently efficient braking mechanisms for newly formed stars points to the star formation process…

Solar and Stellar Astrophysics · Physics 2018-10-23 H. C. Spruit

We investigate the origin of star formation activity in early-type galaxies with current star formation using spatially resolved spectroscopic data from the Mapping Nearby Galaxies at APO (MaNGA) in the Sloan Digital Sky Survey (SDSS). We…

Astrophysics of Galaxies · Physics 2023-08-16 Yun Hee Lee , Ho Seong Hwang , Narae Hwang , Jong Chul Lee , Ki-Beom Kim

We study a simple version of the AdS/CFT (anti-de Sitter spacetime/Conformal Field Theory) correspondence, where operators have integer conformal dimensions. In this model, bulk causality follows from boundary analyticity, even in…

High Energy Physics - Theory · Physics 2009-07-30 David A. Lowe

The AdS/CFT correspondence stipulates a duality between conformal field theories and certain theories of quantum gravity in one higher spatial dimension. However, probing this conjecture on contemporary classical or quantum computers is…

Quantum Physics · Physics 2024-01-25 Rahul Sahay , Mikhail D. Lukin , Jordan Cotler

The stellar cataclysms producing astronomical transients have long been modeled as either a point-like explosion or jet-like engine ignited at the center of a spherically symmetric star. However, many stars are observed, or are expected on…

High Energy Astrophysical Phenomena · Physics 2022-06-08 Marcus DuPont , Andrew MacFadyen , Jonathan Zrake

We discuss new types of second order phase transitions in holography by constructing striped black holes in D=4 with $AdS_{4}$ asymptotics. In the context of $AdS/CFT$, they provide the gravity duals to field theory phases in which…

High Energy Physics - Theory · Physics 2015-06-15 Aristomenis Donos

Undecidability, a hallmark of G\"odel incompleteness theorems, has recently emerged in quantum many-body physics through the spectral gap problem. We demonstrate how this logical limitation can be holographically transmitted to a class of…

High Energy Physics - Theory · Physics 2026-02-02 Sameer Ahmad Mir , Francesco Marino , Arshid Shabir , Lawrence M. Krauss , Mir Faizal

We construct a CFT with $\mathfrak{sl}(2,\mathbb{R})_k$ symmetry at the `tensionless' point $k=3$, which is distinct from the usual $\mathrm{SL}(2,\mathbb{R})_{k=3}$ WZW model. This new CFT is much simpler than the generic WZW model: in…

High Energy Physics - Theory · Physics 2026-01-22 Lorenz Eberhardt , Matthias R. Gaberdiel

In its Euclidean formulation, the AdS/CFT correspondence begins as a study of Yang-Mills conformal field theories on the sphere, S^4. It has been successfully extended, however, to S^1 X S^3 and to the torus T^4. It is natural to hope that…

High Energy Physics - Theory · Physics 2010-12-23 Brett McInnes

We study collisions of massive pointlike particles in three dimensional anti-de Sitter space, generalizing the work on massless particles in [1]. We show how to construct exact solutions corresponding to the formation of either a black hole…

High Energy Physics - Theory · Physics 2017-02-01 Jonathan Lindgren

We present how the surface/state correspondence, conjectured in arXiv:1503.03542, works in the setup of AdS3/CFT2 by generalizing the formulation of cMERA. The boundary states in conformal field theories play a crucial role in our…

High Energy Physics - Theory · Physics 2015-10-28 Masamichi Miyaji , Tokiro Numasawa , Noburo Shiba , Tadashi Takayanagi , Kento Watanabe

Dissipative phenomena occurring during the orbital evolution of a dwarf satellite galaxy around a host galaxy may leave signatures in the star formation activity and signatures in the colour magnitude diagram of the galaxy stellar content.…

Astrophysics of Galaxies · Physics 2015-06-04 S. Pasetto , G. Bertelli , E. K. Grebel , C. Chiosi , Y. Fujita

We extend the study of time-dependent backgrounds in the AdS/CFT correspondence by examining the relation between bulk and boundary for the smooth 'bubble of nothing' solution and for the locally AdS black hole which has the same asymptotic…

High Energy Physics - Theory · Physics 2008-11-26 Simon F. Ross , Georgina Titchener

Understanding how cool stars produce magnetic fields within their interiors is crucial for predicting the impact of such fields, such as the activity cycle of the Sun. In this respect, studying fully convective stars enables us to…

Astrophysics · Physics 2007-05-23 JF Donati , T Forveille , AC Cameron , JR Barnes , X Delfosse , MM Jardine , JA Valenti

Observations at low redshift have begun to tease out the star formation rate in active galaxies (AGN), which marks the beginning of the black hole-star formation connection over cosmic time. Star formation appears to depend on AGN type,…

High Energy Astrophysical Phenomena · Physics 2021-11-03 Chandra B. Singh , Nelitha Kulasiri , Max North , David Garofalo

The holographic correspondence predicts that certain strongly coupled quantum systems describe an emergent, higher-dimensional bulk spacetime in which excitations enjoy local dynamics. We consider a general holographic state dual to an…

High Energy Physics - Theory · Physics 2025-02-24 Simon Caron-Huot , Joydeep Chakravarty , Keivan Namjou

We explain our proposal for an alternative bulk reconstruction of AdS/CFT correspondences from a scalar field by the flow method. By smearing and then normalizing a primary field in a $d$ dimensional CFT, we construct a bulk field, through…

High Energy Physics - Theory · Physics 2022-04-06 Sinya Aoki , Janos Balog , Tetsuya Onogi , Shuichi Yokoyama

Quantum gravity effects are expected to resolve the black hole singularity and the effects may deform the region near but outside the horizon. Applying AdS/CFT correspondence, we see their signatures from the viewpoint of dual conformal…

High Energy Physics - Theory · Physics 2026-04-30 Heng-Yu Chen , Yasuaki Hikida , Yasutaka Koga