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๐Ÿ” bharat kumar ๐Ÿ“‚ Physics
Showing 710 results for "bharat kumar" in Physics
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CHARA Interferometry and TESS Asteroseismology of the Core-Helium Burning Red Giant $\kappa$ Cyg

Arnab Chowhan, Timothy R. Bedding, Daniel Huber, J. M. Joel Ong, Lea S. Schimak, Yaguang Li, Courtney L. Crawford, Timothy R. White ยท 2026

We present a detailed study of the secondary red clump star, $\kappa$ Cyg, by combining long-baseline visible interferometry using the PAVO beam combiner at the CHARA Array with high-precision asterosโ€ฆ

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Microscopic investigation of $E2$ matrix elements in atomic nuclei -- II

Kouser Qureshie, S. P. Rouoof, J. A. Sheikh, N. Rather, S. Jehangir, G. H. Bhat, S. Frauendorf ยท 2026

The present work is a continuation of our earlier investigation with the primary objective to systematically calculate the $E2$ matrix elements using the microscopic approach of the triaxial projectedโ€ฆ

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A Covariant Phase Space Approach to Einstein-AEther Gravity

Walter Arata, Stefano Liberati, Giulio Neri ยท 2026

Black hole thermodynamics in Lorentz-violating gravity is subtle because different excitations propagate at different speeds and hence identify different causal horizons. We revisit Einstein--AEther gโ€ฆ

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Physics Preprint PDF DOI

Structural Chart of Copper-Silver Nanoalloys through machine learning

Manoj Settem, Emanuele Telari, Antonio Tinti, Riccardo Ferrando, Alberto Giacomello ยท 2026

Nanoalloys (or alloy nanoparticles) are an important class of materials that are promising for their functional properties. However, designing synthesis protocols to control their structure and chemicโ€ฆ

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Detection and Astrometry of the Ba-Bb Subsystem in $\alpha$ Piscium: First Dual-Field Interferometry at the CHARA Array

Narsireddy Anugu, Robert Klement, John D. Monnier, Douglas R. Gies, Gail H. Schaefer, Stefan Kraus, Sebastian Carrazco-Gaxiola, Akshat S. Chaturvedi, Mayra Gutierrez, Becky Flores, Jeremy Jones, Colin Kane, Rainer Kohler, Karolina Kubiak, Olli W. Majoinen, Nicholas J. Scott, Kayvon Sharifi ยท 2026

We present the first on-sky demonstration of dual-field interferometry at the CHARA Array and the first direct resolution of the inner Ba--Bb subsystem in the bright hierarchical triple $\alpha$ Pisciโ€ฆ

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Empirical Universal Scaling of Neutron-Skin Curvature Across the Nuclear Chart

Brent Baker ยท 2026

Neutron skins encode essential information about nuclear geometry, surface structure, and isovector response, yet a compact description across the nuclear chart remains elusive. We present an empiricaโ€ฆ

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Physics Preprint PDF DOI

Axially symmetric wormholes

I. A. Sarmiento-Alvarado, Leonel Bixano, Tonatiuh Matos ยท 2026

In this work, we derive an exact vacuum solution to the Einstein field equations that depends on three constant parameters: the throat radius $r_0$, a parameter $q$, which is closely associated with tโ€ฆ

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Constructing Barut-Girardello coherent states for the isotonic oscillator in the DOOT approach

Messan Medard Akouetegan, Isiaka Aremua, Mahouton Norbert Hounkonnou ยท 2026

In this work, we study the quantum system of the isotonic oscillator from the perspective of the diagonal operator ordering technique (DOOT). Within this framework, we construct the associated Barut-Gโ€ฆ

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CHARA Array Delay Lines: Upgrades, Performance and Future Directions

Narsireddy Anugu, Nils H. Turner, Theo A. ten Brummelaar, Gail H. Schaefer, Philippe Berio, Christopher D. Farrington, Becky Flores, Douglas R. Gies, Stefan Kraus, Edgar R. Ligon III, Olli Majoinen, John D. Monnier, Denis Mourard, Nicholas J. Scott, Norman L. Vargas ยท 2026

Long baseline optical and infrared interferometric arrays achieve high angular resolution and enable detailed astrophysical measurements. Interferometers have enabled observations of stars at various โ€ฆ

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A fresh look at boundary terms in Einstein-Hilbert gravity via an initial value variational principle

Songmin Ha, Alexander Rothkopf ยท 2026

A key tenet of general relativity is the dynamical nature of space-time, ideally represented as an initial value problem. Here we explore the variational formulation of classical Einstein-Hilbert gravโ€ฆ

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Imaging two-body correlations in atomic nuclei via low- and high-energy processes

Stavros Bofos, Benjamin Bally, Thomas Duguet, Mikael Frosini ยท 2026

Characterizing the correlated behavior of nucleons inside atomic nuclei constitutes a long-standing challenge, both experimentally and theoretically. It has recently been understood that two-particle โ€ฆ

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Spectral moments of Bures-Hall ensemble and applications to entanglement entropy

Linfeng Wei, Youyi Huang, Lu Wei ยท 2026

We study spectral moments of the Bures-Hall random matrices ensemble. The main result establishes a recurrence relation for the $k$-th spectral moment valid for a real-valued $k$, in contrast to prevaโ€ฆ

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Breaking Four-Point and Three-Point Bending Tests

Subhrangsu Saha, Jeffery R. Roesler, Oscar Lopez-Pamies ยท 2026

Since their initial standardizations in the 1930s and 1950s, the so-called four-point and three-point bending tests on unnotched beams have been embraced by practitioners as two popular methods to indโ€ฆ

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General Zakharov-Shabat equations without Lax operators

Masatoshi Noumi, Takashi Takebe ยท 2025

The operators in the Zakharov-Shabat equations of integrable hierarchies are usually defined from the Lax operators. In this article it is shown that the Zakharov-Shabat equations themselves recover tโ€ฆ

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Higher-form symmetries in supergravity, scalar charges and black-hole thermodynamics

Gabriele Barbagallo, Jose Luis V. Cerdeira, Carmen Gomez-Fayren, Patrick Meessen, Tomas Ortin ยท 2025

Minimal 5-dimensional supergravity compactified on a circle gives the T$^{3}$ model of $\mathcal{N}=2,d=4$ supergravity, whose duality group is SL$(2,\mathbb{R})$. We study exhaustively the relations โ€ฆ

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Simulating droplet adhesion on superhydrophobic surfaces

Pawan Kumar, Joseph D. Berry ยท 2025

A numerical model is proposed to simulate the adhesion, compression, and subsequent detachment of a micro-liter droplet from a superhydrophobic surface composed of chemically homogeneous pillars arranโ€ฆ

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From percolation transition to Anderson localization in one-dimensional speckle potentials

Margaux Vrech, Jan Major, Dominique Delande, Marcel Filoche, Nicolas Cherroret ยท 2025

Classical particles in random potentials typically experience a percolation phase transition, being trapped in clusters of mean size $\chi$ that diverges algebraically at a percolation threshold. In cโ€ฆ

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The phase-field model of fracture incorporating Mohr-Coulomb, Mogi-Coulomb, and Hoek-Brown strength surfaces

S Chockalingam, Adrian Buganza Tepole, Aditya Kumar ยท 2025

Classical phase-field theories of brittle fracture capture toughness-controlled crack growth but do not account for the material's strength surface, which governs fracture nucleation in the absence ofโ€ฆ

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Conundrum of regular black holes with nonlinear electromagnetic fields

Ana Bokulic, Tajron Juric, Ivica Smolic ยท 2025

The search for regular black holes with nonlinear electromagnetic fields has sprouted numerous candidates, each exhibiting certain virtues but often accompanied by significant drawbacks. We demonstratโ€ฆ

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A Quasigroup Approach for Conservation Laws in Asymptotically Flat Spacetimes

Alfonso Zack Robles, Alexander I. Nesterov, Claudia Moreno ยท 2025

In the framework of the quasigroup approach to conservation laws in general relativity, we show how the infinite-parametric Newman-Unti group of asymptotic symmetries can be reduced to the Poincare quโ€ฆ

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