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๐Ÿ” ujjwal sen ๐Ÿ“‚ Physics
Showing 7089 results for "ujjwal sen" in Physics
Physics Preprint PDF DOI

Chemical Taxonomy of $\omega$~Centauri: Ten Populations Reveal a Multi-Phase Enrichment History

Furkan Akbaba, Olcay Plevne, Timur Sahin, Sena Aleyna Senturk ยท 2026

$\omega$~Centauri, the most massive globular cluster in the Milky Way, exhibits a level of stellar population complexity that has long resisted a unified chemical characterisation. We exploit high-resโ€ฆ

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Discontinuous BBP transitions

Dario Bocchi, Giulio Biroli, Chiara Cammarota, Federico Ricci-Tersenghi ยท 2026

The Baik-Ben Arous-Peche (BBP) transition sets fundamental limits for detecting low-rank structure in noisy high-dimensional data and underlies a wide range of spectral methods in many fields from phyโ€ฆ

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The major cluster merger in Abell 2034 as seen by XRISM: Strong turbulence and spectral anomalies?

Annie Heinrich, Irina Zhuravleva, Eugene Churazov, Congyao Zhang, Daniele Rogantini, Hannah McCall, Reinout J. van Weeren, William R. Forman ยท 2026

XRISM observations to date have shown that gas kinetic pressures in the intracluster medium (ICM) tend towards the low end of predictions from cosmological simulations. Here, we present a XRISM observโ€ฆ

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SPYGLASS. VII-B. Tracing the Fragments of Massive Star Formation Using Low-Mass Associations

Ronan Kerr, Adam L. Kraus, Jonathan C. Tan, Julio Chaname, Facundo Perez Paolino, Joshua S. Speagle, Juan P. Farias, Jose G. Fernandez-Trincado, Keith Hawkins ยท 2026

New observations from the Gaia spacecraft have traced an emerging demographic of low-mass associations disconnected from larger associations or GMCs. The first of these associations were recently charโ€ฆ

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Physics Preprint PDF DOI

Metalization of topological insulators

Xian-Peng Zhang, Yan-Qing Feng, Ji-Feng Shao, Haiwen Liu, Yugui Yao ยท 2026

In modern condensed matter theory, phases of electronic matter--such as metals and insulators-are fundamentally distinguished by the presence or absence of charge-carrying quasiparticles or excitationโ€ฆ

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Light sea-quark flavor asymmetry and angular momentum of the nucleon in a scalar-vector spectator model

Parashmani Thakuria, Madhurjya Lalung, Jayanta Kumar Sarma ยท 2026

We present a light-front spectator model that describes the proton as an active sea antiquark paired with a composite scalar-vector spectator. Using a spatial profile based on soft-wall AdS/QCD, we fiโ€ฆ

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$\mathcal{H}$olographic $\mathcal{N}$aturalness and Information See-Saw Mechanism for Neutrinos

Andrea Addazi, Giuseppe Meluccio ยท 2026

The microscopic origin of the de Sitter entropy remains a central puzzle in quantum gravity related to the cosmological constant problem. Within $\mathcal{H}$olographic $\mathcal{N}$aturalness, we proโ€ฆ

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Basic linear algebra methods for quantum problems

Aaron Dayton, Kiana Gallagher, Sarah E. Huber, Thomas E. Baker ยท 2026

Making new methods for quantum problems often relies on using basic operations in linear algebra. Often these routines are hidden behind well-known libraries that have been optimized over decades. Attโ€ฆ

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Cone hierarchy and the screening of matter by gravity

Julio Arrechea, Carlos Barcelo, Gil Jannes ยท 2026

In a previous paper by some of the authors (Gen. Rel. Grav. 56, 116, 2024), we introduced a novel paradigm with which to understand gravitational phenomena. We called it the Harmonic Background Paradiโ€ฆ

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Clash of the Trident and Tuning Fork: insights from bar and spiral strength in the (massive black hole)-stellar mass diagrams, and the `Triangal' galaxy evolution schema

Alister W. Graham ยท 2026

The `Triangal' galaxy evolution schema is used to assess whether the Tuning Fork (bar strength) or the van~den~Bergh Trident and ATLAS$^{3D}$ Comb (spiral strength) offer greater evolutionary insight.โ€ฆ

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Three-dimensional topological ferroelectrics

Haohao Sheng, Sheng Zhang, Zhong Fang, Hongming Weng, Zhijun Wang ยท 2026

Three-dimensional (3D) topological ferroelectric (FE) insulators, in which topological and FE orders naturally coexist, enable field-controlled spintronic devices. In this work, we predict a new strucโ€ฆ

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A homogeneous three-dimensional view of Molecular Cloud kinematics out to 2.5 kpc. Using Young Stellar Objects and Open Clusters as complementary tracers

Xabier Perez-Couto, Santiago Torres, Nuria Miret-Roig, Friedrich Anders, Alexander J. Mustill, Eva Villaver, Minia Manteiga ยท 2026

Understanding the large-scale dynamics of molecular clouds (MCs) is crucial for constraining the processes that govern star formation and the structure and evolution of the Galaxy. While gas tracers hโ€ฆ

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Surfactant effect on collective bubble bursting and aerosol emission

Megan Mazzatenta, Samuel M. Koblensky, Luc Deike ยท 2026

Bubbles entrained by breaking waves rise to the ocean surface where they cluster and burst, emitting sea spray aerosols into the atmosphere. Bubble bursting thereby links seawater biogeochemistry and โ€ฆ

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Cosmology of the interacting Tsallis holographic dark energy in $f(R,T)$ gravity framework

Sanjeeda Sultana, Chayan Ranjit, Surajit Chattopadhyay, Ertan Gudekli ยท 2026

In this work, we have analyzed the cosmology of the Tsallis holographic dark energy (THDE), a particular case of Nojiri-Odintsov HDE proposed in [S. Nojiri and S. D. Odintsov, \textit{Gen. Relativ. Grโ€ฆ

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SAGUI: SED-based Segmentation of Multi-band Galaxy Images -- Application to JADES in GOODS-South

Rafael S. de Souza, Andressa Wille, Shravya Shenoy, Aarya A. Patil, Alberto Krone-Martins, Ana L. Chies-Santos, Celine Boehm, Reinaldo R. Rosa, Thallis Pessi, Emille E. O. Ishida, Kristen C. Dage, Lilianne Nakazono, Phelipe Darc, Rupesh Durgesh (for the COIN collaboration) ยท 2026

We present sagui, a modular framework for the analysis of multi-band imaging data in spatially resolved galaxies, with synergies to integral-field spectroscopy (IFS). Building on the spectro-spatial pโ€ฆ

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Generalized parton distributions of valence, sea, and gluon components of the proton

Yiping Liu, Siqi Xu, Chandan Mondal, Xingbo Zhao, James P. Vary ยท 2026

We compute the generalized parton distributions (GPDs) of valence quarks, sea quarks, and gluons in the proton using light-front wave functions obtained within the basis light-front quantization (BLFQโ€ฆ

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Magnetoresistance from decoherence

Xian-Peng Zhang, Yan-Qing Feng, Haiwen Liu, Yugui Yao ยท 2026

Microscopic theories of magnetoresistance have traditionally focused on momentum relaxation and the plasma frequency of itinerant electrons. Here, we uncover a distinct mechanism in which magnetoresisโ€ฆ

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On the complementary roles of anisotropic crack density and anisotropic crack driving force in phase-field modeling of mixed-mode fracture

Guk Heon Kim, Minseo Kim, Kwangsan Chun, Jaemin Kim ยท 2026

Phase-field models for anisotropic fracture employ two complementary mechanisms: (i) the anisotropic crack density function, controlling direction-dependent fracture resistance, and (ii) the anisotropโ€ฆ

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The ubiquity of turbulence in the expanding kinematics of the ionized shells of Galactic planetary nebulae

Francisco Ruiz-Escobedo, Michael G. Richer, Jose Alberto Lopez ยท 2026

We present an analysis of the residual velocities from a sample of 105 Galactic planetary nebulae (PNe), the largest done to date on this subject. The analysis has been carried out with long-slit, higโ€ฆ

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Charmonium radiative transitions to dileptons from lattice QCD: The case of $h_c \to \eta_c \ell^+\ell^-$ and $\chi_{c1} \to J/\psi\,\ell^+\ell^-$

D. Becirevic, R. Di Palma, R. Frezzotti, G. Gagliardi, V. Lubicz, F. Sanfilippo, N. Tantalo ยท 2026

We present a lattice QCD study of dilepton production in charmonium transitions, specifically focusing on the $1^{+-} \to 0^{-+}$ and $1^{++} \to 1^{--}$ processes: $h_c \to \eta_c \ell^+ \ell^-$ and โ€ฆ

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