Tootfinder

Accretion dynamics in black holes with spontaneous Lorentz symmetry breaking
Daniela S. J. Cordeiro, Ednaldo L. B. Junior, Jos\'e Tarciso S. S. Junior, Francisco S. N. Lobo, Jorde A. A. Ramos, Manuel E. Rodrigues, Diego Rubiera-Garcia, Lu\'is F. Dias da Silva, Henrique A. Vieira
https://arxiv.org/abs/2507.22031

Accretion dynamics in black holes with spontaneous Lorentz symmetry breaking
We investigate the spherical accretion of various types of fluids onto a Schwarzschild-like black hole solution modified by a Kalb-Ramond field implementing spontaneous Lorentz symmetry violation (LV). The system is analyzed for isothermal fluids characterized by the equation of state $p=ωρ$, including ultra-stiff, ultra-relativistic, and radiation fluids. We investigate the effect of the LV parameter $l$ on the fluid density $ρ(r)$, radial velocity $u(r)$, and accretion rate $\dot{M}$. Usin…

Active Liquid Crystal Theory Explains the Collective Organization of Microtubules in Human Mitotic Spindles
Colm P. Kelleher, Suryanarayana Maddu, Mustafa Basaran, Thomas M\"uller-Reichert, Michael J. Shelley, Daniel J. Needleman
https://arxiv.org/abs/2507.22273

Active Liquid Crystal Theory Explains the Collective Organization of Microtubules in Human Mitotic Spindles
How thousands of microtubules and molecular motors self-organize into spindles remains poorly understood. By combining static, nanometer-resolution, large-scale electron tomography reconstructions and dynamic, optical-resolution, polarized light microscopy, we test an active liquid crystal continuum model of mitotic spindles in human tissue culture cells. The predictions of this coarse-grained theory quantitatively agree with the experimentally measured spindle morphology and fluctuation spectr…

Out-of-equilibrium spinodal-like scaling behaviors across the magnetic first-order transitions of 2D and 3D Ising systems
Andrea Pelissetto, Ettore Vicari
https://arxiv.org/abs/2507.21286

Out-of-equilibrium spinodal-like scaling behaviors across the magnetic first-order transitions of 2D and 3D Ising systems
We study the out-of-equilibrium scaling behavior of two-dimensional and three-dimensional Ising systems, when they are slowly driven across their {\em magnetic} first-order transitions at low temperature $T

Transformations of Triads and Seventh Chords: Group Extensions and Duality
Thomas M. Fiore, Thomas Noll, Ethan Bonnell, Hayden Pyle, No\'e Rodriguez, Meredith Williams, Sonia Cannas, Moreno Andreatta
https://arxiv.org/abs/2507.20811

Transformations of Triads and Seventh Chords: Group Extensions and Duality
Transformational music theory, pioneered by David Lewin, uses simply transitive group actions to analyze music. In this paper, we construct a simply transitive group action on a disjoint union of two sets, built from a simply transitive action on each set and an equivariant bijection connecting them. Motivational examples are the omnibus progression and the reflected omnibus progression, which involve the consonant triads and the dominant/half-diminished seventh chords, connected by the inclusi…

Dynamical instability and transport peak of chiral matter from holography
Pei Zheng, Yidian Chen, Danning Li, Mei Huang, Yu-xin Liu
https://arxiv.org/abs/2507.20233 https://

Dynamical instability and transport peak of chiral matter from holography
We study dynamical properties of strongly coupled chiral matter by using holographic method. We demonstrate, at both linear and nonlinear levels, that perturbations on thermodynamically unstable backgrounds within the spinodal region of chiral first-order phase transitions exhibit dynamic instability. The corresponding magnitude of dynamic instability can be characterized by the critical momentum. Furthermore, we found that, within a certain temperature range, the quasi-normal mode spectrum con…

Electric-field induced half-metallicity in a two-dimensional ferromagnetic Janus VSSe bilayer
Khushboo Dange, Shivprasad S. Shastri, Alok Shukla
https://arxiv.org/abs/2508.20679

Electric-field induced half-metallicity in a two-dimensional ferromagnetic Janus VSSe bilayer
Two-dimensional (2D) half-metals with intrinsic ferromagnetism hold great potential for applications in spintronics. In this study, we aim to expand the known space of such 2D ferromagnetic (FM) half-metals by investigating bilayer of Janus VSSe, an FM semiconductor. Its structural, electronic, and magnetic properties are examined using density functional theory, employing the DFT+$U$ method, coupled with the PBE functional. The stability of the bilayer is examined using ab initio molecular dyn…

Spontaneous Quantum Turbulence in a Newborn Bose-Einstein Condensate via the Kibble-Zurek Mechanism
Seong-Ho Shinn, Matteo Massaro, Mithun Thudiyangal, Adolfo del Campo
https://arxiv.org/abs/2506.21670

Spontaneous Quantum Turbulence in a Newborn Bose-Einstein Condensate via the Kibble-Zurek Mechanism
The Kibble-Zurek mechanism (KZM) predicts the spontaneous formation of topological defects in a continuous phase transition driven at a finite rate. We propose the generation of spontaneous quantum turbulence (SQT) via the KZM during Bose-Einstein condensation induced by a thermal quench. Using numerical simulations of the stochastic projected Gross-Pitaevskii equation in two spatial dimensions, we describe the formation of a newborn Bose-Einstein condensate proliferated by quantum vortices. We…

sp_hypertext: Hypertext 2009 dynamic contact network
The temporal network of contacts among attendees of the ACM Hypertext 2009 conference, which spanned 2.5 days of time.
This network has 113 nodes and 2196 edges.
Tags: Social, Offline, Unweighted, Temporal
https://networks.skewed.de/net/sp_hype…

The Trump administration’s request to claw back $9.4 billion in previously approved spending on foreign aid and public media ran into significant opposition Wednesday, potentially dooming its path forward in the Senate.
Numerous GOP lawmakers on the Appropriations Committee,
including Chairwoman Susan Collins, expressed concern at how the proposed rescissions would affect American “soft power”
as well as local radio and television stations that rely on the Corporation for P…

Magnetism and nonlinear charge transport in NiFe2O4/{\gamma}-Al2O3/SrTiO3 heterostructure for spintronic applications
Amit Chanda, Thor Hvid-Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Maja A. Dunstan, Kasper S. Pedersen, Dae-Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier
https://arxiv.org/abs/2508.20710

Magnetism and nonlinear charge transport in NiFe2O4/γ-Al2O3/SrTiO3 heterostructure for spintronic applications
We present the synthesis and study of the magnetic and electronic properties of NiFe2O4/γ-Al2O3/SrTiO3 heterostructure. The γ-Al2O3/SrTiO3 interface hosts a high-mobility two-dimensional electron gas (2DEG) with large spin-orbit coupling, making it promising for spintronics applications if it can be coupled to a suitable source of spin currents. Here, we synthesize a ferrimagnetic insulating NiFe2O4(001) layer on γ-Al2O3(001)/SrTiO3(001) using a low-temperature reactive sputtering at 150 deg…