Tootfinder

https://www.lrb.co.uk/the-paper/v46/n05/pankaj-mishra/the-shoah-after-gaza

Pankaj Mishra · The Shoah after Gaza
Memories of Jewish suffering at the hands of Nazis are the foundation on which most descriptions of extreme ideology and...

Relativistic time delay analysis of pulsar signals near ultra-compact objects
Viraj Kalsariya, Parth Bambhaniya, Pankaj S. Joshi
https://arxiv.org/abs/2405.01835

Relativistic time delay analysis of pulsar signals near ultra-compact objects
The upcoming discoveries of pulsars orbiting the center of the Milky Way will present unparalleled opportunities to examine the causal structure of the spacetime geometry of Sagittarius A*. In this paper, we investigate the fully relativistic propagation time delay of pulsar signals in the Joshi-Malafarina-Narayan (JMN-1) and Janis-Newman-Winicour (JNW) spacetimes. This delay arises basically from the spacetime curvatures in the vicinity of these ultra-compact objects, induced by the intense gr…

Impact of unmodeled eccentricity on the tidal deformability measurement and implications for gravitational wave physics inference
Poulami Dutta Roy, Pankaj Saini
https://arxiv.org/abs/2403.02404

Impact of unmodeled eccentricity on the tidal deformability measurement and implications for gravitational wave physics inference
With the expected large number of binary neutron star (BNS) observations through gravitational waves (GWs), third-generation GW detectors, Cosmic Explorer (CE) and Einstein Telescope (ET), will be able to constrain the tidal deformability, and hence the equation of state (EoS) of neutron star (NS) with exquisite precision. A subset of the detected BNS systems can retain residual eccentricity in the detector frequency band. We study the systematic errors due to unmodeled eccentricity in the tida…

Fluid ejections in nature
Elio J. Challita, Pankaj Rohilla, M. Saad Bhamla
https://arxiv.org/abs/2403.02359 https://arxiv.org/pdf/240…

Fluid ejections in nature
From microscopic fungi to colossal whales, fluidic ejections are a universal and intricate phenomenon in biology, serving vital functions such as animal excretion, venom spraying, prey hunting, spore dispersal, and plant guttation. This review delves into the complex fluid physics of ejections across various scales, exploring both muscle-powered active systems and passive mechanisms driven by gravity or osmosis. We introduce a framework using dimensionless numbers to delineate transitions from …

Evidence of Kolmogorov like scalings and multifractality in the rainfall events
Joya GhoshDastider, D. Pal, Pankaj K. Mishra
https://arxiv.org/abs/2405.03463

Evidence of Kolmogorov like scalings and multifractality in the rainfall events
In this paper we present a detailed statistical analysis related to the characterization of the spatial and temporal fluctuations present in the rainfall patterns of North-East region ($26.05^{\circ}N-26.95^{\circ}N$, $88.05^{\circ}E-94.95^{\circ}E$) of India using half hourly rainfall data over the last 20 years for the range 2001-2020. We analyze the nature of the distribution by computing the mean, second moment of the fluctuation, skewness and kurtosis of the temporal rainfall data that ind…

Impact of unmodeled eccentricity on the tidal deformability measurement and implications for gravitational wave physics inference
Poulami Dutta Roy, Pankaj Saini
https://arxiv.org/abs/2403.02404

Impact of unmodeled eccentricity on the tidal deformability measurement and implications for gravitational wave physics inference
With the expected large number of binary neutron star (BNS) observations through gravitational waves (GWs), third-generation GW detectors, Cosmic Explorer (CE) and Einstein Telescope (ET), will be able to constrain the tidal deformability, and hence the equation of state (EoS) of neutron star (NS) with exquisite precision. A subset of the detected BNS systems can retain residual eccentricity in the detector frequency band. We study the systematic errors due to unmodeled eccentricity in the tida…

Vector databases give you the infrastructure to store the embeddings, but how those embeddings are made is the most innovative part of all. Join Sonam Pankaj at this year's Berlin Buzzwords for her short talk on metric learning. #bbuzz
https…

Modeling Linear and Non-linear Layers: An MILP Approach Towards Finding Differential and Impossible Differential Propagations
Debranjan Pal, Vishal Pankaj Chandratreya, Abhijit Das, Dipanwita Roy Chowdhury
https://arxiv.org/abs/2405.00441

Modeling Linear and Non-linear Layers: An MILP Approach Towards Finding Differential and Impossible Differential Propagations
Symmetric key cryptography stands as a fundamental cornerstone in ensuring security within contemporary electronic communication frameworks. The cryptanalysis of classical symmetric key ciphers involves traditional methods and techniques aimed at breaking or analyzing these cryptographic systems. In the evaluation of new ciphers, the resistance against linear and differential cryptanalysis is commonly a key design criterion. The wide trail design technique for block ciphers facilitates the demo…

Single Electron Quantum Dot in Two-Dimensional Transition Metal Dichalcogenides
Jaros{\l}aw Paw{\l}owski, Pankaj Kumar, Kenji Watanabe, Takashi Taniguchi, Konstantin S. Novoselov, Hugh O. H. Churchill, Dharmraj Kotekar-Patil
https://arxiv.org/abs/2402.19480

Single Electron Quantum Dot in Two-Dimensional Transition Metal Dichalcogenides
Spin-valley properties in two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDC) has attracted significant interest due to the possible applications in quantum computing. Spin-valley properties can be exploited in TMDC quantum dot (QD) with well-resolved energy levels. This requires smaller QDs, especially in material systems with heavy carrier effective mass e.g. TMDCs and silicon. Device architectures employed for TMDC QDs so far have difficulty achieving smaller QDs. The…

Harnessing the Duality of Magnetism and Conductivity: A Review of Oxide based Dilute Magnetic Semiconductors
Pankaj Bhardwaj, Jarnail Singh, Vikram Verma, Ravi Kumar
https://arxiv.org/abs/2402.18173

Harnessing the Duality of Magnetism and Conductivity: A Review of Oxide based Dilute Magnetic Semiconductors
Over the last two decades, the new branch of spintronics, i.e., semiconductor spintronics, has gained more attention because it integrates the characteristics of conventional semiconductors, such as optical bandgap and charge carriers, helpful for processing and computing pieces of information combined with magnets for data storage applications in a single device. Likewise, substituting transition metal (TM) ions to induce magnetic qualities into semiconductors or oxides creates dilute magnetic…

On Reporting Durable Patterns in Temporal Proximity Graphs
Pankaj K. Agarwal, Xiao Hu, Stavros Sintos, Jun Yang
https://arxiv.org/abs/2403.16312 https://…

On Reporting Durable Patterns in Temporal Proximity Graphs
Finding patterns in graphs is a fundamental problem in databases and data mining. In many applications, graphs are temporal and evolve over time, so we are interested in finding durable patterns, such as triangles and paths, which persist over a long time. While there has been work on finding durable simple patterns, existing algorithms do not have provable guarantees and run in strictly super-linear time. The paper leverages the observation that many graphs arising in practice are naturally pr…

AipanVR: A Virtual Reality Experience for Preserving Uttarakhand's Traditional Art Form
Nishant Chaudhary, Mihir Raj, Richik Bhattacharjee, Anmol Srivastava, Rakesh Sah, Pankaj Badoni
https://arxiv.org/abs/2404.12643

AipanVR: A Virtual Reality Experience for Preserving Uttarakhand's Traditional Art Form
This paper presents a demonstration of the developed prototype showcasing a way to preserve the Intangible Cultural Heritage of Uttarakhand, India. Aipan is a traditional art form practiced in the Kumaon region in the state of Uttarakhand. It is typically used to decorate floors and walls at places of worship or entrances of homes and is considered auspicious to begin any work or event. This art is associated with a great degree of social, cultural as well as religious significance and is passe…

Photon statistics analysis of h-BN quantum emitters with pulsed and continuous-wave excitation
Hamidreza Akbari, Pankaj K. Jha, Kristina Malinowski, Benjamin E. C. Koltenbah, Harry A. Atwater
https://arxiv.org/abs/2403.12291

Photon statistics analysis of h-BN quantum emitters with pulsed and continuous-wave excitation
We report on the quantum photon statistics of hexagonal boron nitride (h-BN) quantum emitters by analyzing the Mandel Q parameter. We have measured the Mandel Q parameter for h-BN quantum emitters under various temperatures and pump power excitation conditions. Under pulsed excitation we can achieve a Mandel Q of -0.002 and under continuous-wave (CW) excitation this parameter can reach -0.0025. We investigate the effect of cryogenic temperatures on Mandel Q and conclude that the photon statisti…

Rational curves on complete intersections and the circle method
Tim Browning, Pankaj Vishe, Shuntaro Yamagishi
https://arxiv.org/abs/2404.11123 https://

Rational curves on complete intersections and the circle method
We study the geometry of the space of rational curves on smooth complete intersections of low degree, which pass through a given set of points on the variety. The argument uses spreading out to a finite field, together with an adaptation to function fields of positive characteristic of work by Rydin Myerson on the circle method. Our work also allows us to handle weak approximation for such varieties.

Dynamic instabilities and turbulence of merged rotating Bose-Einstein condensates
Anirudh Sivakumar, Pankaj Kumar Mishra, Ahmad A. Hujeirat, Paulsamy Muruganandam
https://arxiv.org/abs/2402.18474

Dynamic instabilities and turbulence of merged rotating Bose-Einstein condensates
We present the simulation results of merging harmonically confined rotating Bose-Einstein condensates in two dimensions. Merging of the condensate is triggered by positioning the rotation axis at the trap minima and moving both condensates towards each other while slowly ramping their rotation frequency. We analyze the dynamics of the merged condensate by letting them evolve under a single harmonic trap. We systematically investigate the formation of solitonic and vortex structures in the final…

Semi-Algebraic Off-line Range Searching and Biclique Partitions in the Plane
Pankaj K. Agarwal, Esther Ezra, Micha Sharir
https://arxiv.org/abs/2403.12276 …

Semi-Algebraic Off-line Range Searching and Biclique Partitions in the Plane
Let $P$ be a set of $m$ points in ${\mathbb R}^2$, let $Σ$ be a set of $n$ semi-algebraic sets of constant complexity in ${\mathbb R}^2$, let $(S,+)$ be a semigroup, and let $w: P \rightarrow S$ be a weight function on the points of $P$. We describe a randomized algorithm for computing $w(P\capσ)$ for every $σ\inΣ$ in overall expected time $O^*\bigl( m^{\frac{2s}{5s-4}}n^{\frac{5s-6}{5s-4}} + m^{2/3}n^{2/3} + m + n \bigr)$, where $s>0$ is a constant that bounds the maximum complexity of the…

Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
Sayantan Choudhury, Ahaskar Karde, Pankaj Padiyar, M. Sami
https://arxiv.org/abs/2403.13484

Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
We present a study of the Effective Field Theory (EFT) generalization of stochastic inflation in a model-independent single-field framework and its impact on primordial black hole (PBH) formation. We show how the Langevin equations for the "soft" modes in quasi de Sitter background is described by the Infra-Red (IR) contributions of scalar perturbations, and the subsequent Fokker-Planck equation driving the probability distribution for the stochastic duration ${\cal N}$, significantly modify in…

Redefining fractals by Suzuki contraction
Kanase Pankaj Popatrao
https://arxiv.org/abs/2403.11462 https://arxiv.org/pdf/2403.11462

Redefining fractals by Suzuki contraction
There has been a significant effort in recent years to generalize the traditional concept of iterated function systems (IFS).In this article, we proposed Suzuki contraction in hyperspace and finding out the fixed point for Hutchinson mapping, which is called a deterministic fractal. The deterministic fractal for such a Suzuki contraction mapping is shown to exist and to be unique. We propose the Suzuki IFS (SIFS) in the literature for fractal creation based on this conclusion. Keywords: Fixed p…

FocusMAE: Gallbladder Cancer Detection from Ultrasound Videos with Focused Masked Autoencoders
Soumen Basu, Mayuna Gupta, Chetan Madan, Pankaj Gupta, Chetan Arora
https://arxiv.org/abs/2403.08848

FocusMAE: Gallbladder Cancer Detection from Ultrasound Videos with Focused Masked Autoencoders
In recent years, automated Gallbladder Cancer (GBC) detection has gained the attention of researchers. Current state-of-the-art (SOTA) methodologies relying on ultrasound sonography (US) images exhibit limited generalization, emphasizing the need for transformative approaches. We observe that individual US frames may lack sufficient information to capture disease manifestation. This study advocates for a paradigm shift towards video-based GBC detection, leveraging the inherent advantages of spa…

Parameter identification in PDEs by the solution of monotone inclusion problems
Pankaj Gautam, Markus Grasmair
https://arxiv.org/abs/2403.04557 https://

Parameter identification in PDEs by the solution of monotone inclusion problems
In this paper we consider a parameter identification problem for a semilinear parabolic PDE. For the regularized solution of this problem, we introduce a total variation based regularization method requiring the solution of a monotone inclusion problem. We show well-posedness in the sense of inverse problems of the resulting regularization scheme. In addition, we introduce and analyze a numerical algorithm for the solution of this inclusion problem using a nested inertial primal dual method. We…

A bonafide model of structure formation from gravitational collapse
Koushiki, Dipanjan Dey, Pankaj S. Joshi
https://arxiv.org/abs/2404.03901 https://

A bonafide model of structure formation from gravitational collapse
This paper explores the cosmological implications of a scalar field with a specific potential, crucial for achieving the final equilibrium state of gravitational collapse. We consider a system with two fluids: minimally coupled matter representing dust-like dark matter and a scalar field acting as dark energy. Our model, akin to the top-hat collapse model, focuses on isolated over-dense regions within a closed FLRW metric, while the background follows a flat FLRW metric. We analyze spacetime co…

Les Houches Lectures on Community Ecology: From Niche Theory to Statistical Mechanics
Wenping Cui, Robert Marsland III, Pankaj Mehta
https://arxiv.org/abs/2403.05497

Les Houches Lectures on Community Ecology: From Niche Theory to Statistical Mechanics
Ecosystems are among the most interesting and well-studied examples of self-organized complex systems. Community ecology, the study of how species interact with each other and the environment, has a rich tradition. Over the last few years, there has been a growing theoretical and experimental interest in these problems from the physics and quantitative biology communities. Here, we give an overview of community ecology, highlighting the deep connections between ecology and statistical physics. …

Medium Assisted Low Energy Nuclear Fusion
Pankaj Jain, Harishyam Kumar
https://arxiv.org/abs/2403.04428 https://arxiv.org/pdf/2403.04…

Medium Assisted Low Energy Nuclear Fusion
We study the process of nuclear fusion at low energies in a medium using the second order time dependent perturbation theory. We consider a specific process which involves fusion of a low energy proton with a Nickel nucleus. The reaction proceeds in two steps or interactions. We refer to the amplitudes corresponding to these two interactions as the the molecular and the nuclear matrix elements. The first amplitude involves Coulomb interaction with another nucleus in the medium while the second …

Medium Assisted Low Energy Nuclear Fusion
Pankaj Jain, Harishyam Kumar
https://arxiv.org/abs/2403.04428 https://arxiv.org/pdf/2403.04…

Medium Assisted Low Energy Nuclear Fusion
We study the process of nuclear fusion at low energies in a medium using the second order time dependent perturbation theory. We consider a specific process which involves fusion of a low energy proton with a Nickel nucleus. The reaction proceeds in two steps or interactions. We refer to the amplitudes corresponding to these two interactions as the the molecular and the nuclear matrix elements. The first amplitude involves Coulomb interaction with another nucleus in the medium while the second …