Tata Institute of Fundamental Research

Data-driven Modeling of Telluric Features and Stellar Variability with StellarSpectraObservationFitting.jl

Abstract A significant barrier to achieving the radial velocity (RV) measurement accuracy and precision required to characterize terrestrial mass exoplanets is the existence of time-variable features in the measured spectra, from both telluric absorption and stellar variability,...

Generalized Nonlinear Bayesian Pulsar Timing with ENTERPRISE

Abstract We use the Bayesian methods in the ENTERPRISE package to examine the fully general parameterization of pulsar timing models in tandem with noise. We investigate four pulsars, PSRs J1600–3053, J2043+1711, J0740+6620, and J1640+2224, through the lens of Bayesian timing. We...

Enhancing electromagnetic calorimeter signal reconstruction with machine learning-based noise discrimination

Abstract Calorimeters operating in high-radiation environments are susceptible to damage, leading to increased noise that can significantly degrade energy resolution. A common way to mitigate noise is to apply a higher energy threshold on the calorimeter cells, typically set a fe...

Web of non-invertible dualities for (2+1) dimensional models with subsystem symmetries

We extend non-invertible duality concepts familiar from one-dimensional systems to two spatial dimensions by constructing a web of non-invertible dualities for lattice models with subsystem symmetries. Focusing on \mathbb{Z}_2×\mathbb{Z}_2 ℤ 2 × ℤ 2 subsystem symmetry on the squa...

Instability-Driven Mechanically Locked States in Functional Oxide Membranes

Abstract While mechanical instabilities enable engineered nonlinear responses, their controlled application in functional crystalline oxides has remained largely unexplored. Recent advances in freestanding oxide membranes now allow their integration into nanoscale, bistable archi...

Emergent states and algebras from the double-scaling limit of pure states in SYK

A bstract Recent work has emphasized a subtlety of large- N limits in AdS/CFT: a sequence of pure states in the microscopic theory need not remain pure with respect to the emergent algebra of observables. We study this phenomenon for Kourkoulou-Maldacena (KM) states in the double...

Measurement-Induced Local Dephasing Generates Symmetrically Located Entangled Sites in a Fermionic Tight-Binding Lattice

Abstract We investigate an odd-sized fermionic open tight-binding chain subjected to stochastic projective measurements at its central site, effectively inducing localized dephasing. Focusing initially on the single-particle regime, we demonstrate that when the system is prepared...

Hydrogen Bonds Determining the Conformation of Isolated Amino Acid Residues in Proteins: Re‐Examination of the Fully Extended C5 Structures

Hydrogen bonds contribute substantially to the stabilisation of specific three-dimensional structures of peptides. The C5 hydrogen bond is an intraresidue interaction, which appears to contribute to the stabilisation of fully extended residue conformations, with backbone torsion...

Selection favors cost-ordered adaptive mutational paths in a stress-magnitude-dependent manner

Abstract Chronic exposure to stress requires adaptive strategies beyond canonical regulatory mechanisms. Stress varies, both qualitatively and quantitatively, across physiological niches and exerts distinct selection pressures on colonizing bacteria. Bacteria employ diverse defen...

Methyl indole-3-acetate contributes to strain-specific anti-inflammatory effects of Lactiplantibacillus plantarum

Lactiplantibacillus plantarum is a widely recognized probiotic with anti-inflammatory potential, yet its efficacy varies among strains and the underlying determinants remain poorly defined. Here, we identify methyl indole-3-acetate (MIA), a previously uncharacterized microbial me...

The GMRT High-resolution Southern Sky Survey for Pulsars and Transients. VIII. Orbital Variability and the Evolution of a 1 day He-WD Millisecond Pulsar J2101–4802

Abstract We present timing and orbital phase-resolved polarimetry of the millisecond pulsar (MSP) J2101−4802, having a spin period of 9.48 ms and dispersion measure (DM) 25.05 pc cm −3 discovered with the Giant Meter Radio Telescope (GMRT). From the phase-connected timing of this...

Testing the gearbox hypothesis for insect flight control

Across Diptera, sustained flight relies on stretch-activated asynchronous flight muscles that generate multiple contraction cycles per motor neuron impulse, enabling wingbeat frequencies of ∼100-1000 Hz. These muscles attach to the thorax as indirect flight muscles, driving wing...

Special Relativity with the Lorentz Factor

This code shows the applications of the Lorentz factor with visual graphs to demonstrate the transformations between reference frames in spacetime continuum. It solves fundamental relativistic effects, such as time dilation and length contraction, showing how they become signific...

Special Relativity with the Lorentz Factor

This code shows the applications of the Lorentz factor with visual graphs to demonstrate the transformations between reference frames in spacetime continuum. It solves fundamental relativistic effects, such as time dilation and length contraction, showing how they become signific...

A Chemical Space Perspective on Diastereomeric Barriers in Alkylperoxy-to-Hydroperoxyalkyl Isomerization

Abstract Low-temperature hydrocarbon autoxidation involves radical intermediates whose reactivity depends not only on the stereochemistry of the intermediates themselves, but also on that of the transient species encountered along the reaction path. This study offers large-scale...

Semi-universality of conformal higher-derivative and conformal higher-spin fields

A bstract In this paper, we study thermal partition functions of free exotic conformal field theories, focusing on conformal higher-derivative and conformal higher-spin fields, in the semi-universal limit | ω i | → 1. It was recently conjectured in [1] that, in this limit, the th...

Reaction–Transport Coupling Drives Spatiotemporal Organization in Fuel‐Driven Supramolecular Polymerization

ABSTRACT Chemically fueled supramolecular systems provide a versatile platform for generating nonequilibrium structures and dynamical instabilities, including chemical oscillations and traveling waves reminiscent of biological organization. However, a minimal mechanistic framewor...

Gaia’s Promise to Detect Compact-object Binaries: Where We Stand with the Third Data Release

Abstract With its third data release (DR3), Gaia begins unveiling dormant candidate compact object (CO) binaries with luminous companions (LC) as predicted by several past theoretical studies. To date, three black hole (BH), 21 neutron star (NS), and ≈3200 white dwarf (WD) candid...

Semi-universality of CFT$_d$ entropy at large spin

The thermal partition function, Z <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>Z</mml:mi> </mml:math> , of a CFT_d <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>C</mml:mi> <mml:mi>F</mml:mi> <mm...

Unveiling the Donor-Modulated Intramolecular ChargeTransfer Phenomenon in the Excited-State Dynamics of Tetraphenylbuta-1,3-diene-BasedDonor–Acceptor Derivatives

Abstract Precise modulation of charge transfer (CT) characteristics in the excited state of aggregation-induced emission (AIE)-active organic emitters is essential for optimizing their performance mainly in optoelectronic applications such as organic light emitting diodes (OLEDs)...