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๐Ÿ” hamid ebrahimzad ๐Ÿ“‚ Physics
Showing 415 results for "hamid ebrahimzad" in Physics
Physics Preprint PDF DOI

Microscopic primordial black holes as macroscopic dark matter from large extra dimensions

Giuseppe Filiberto Vitale, Gaetano Lambiase, Tanmay Kumar Poddar, Luca Visinelli ยท 2026

We study the coupled cosmological evolution of primordial black holes (PBHs) and radiation in the Arkani-Hamed-Dimopoulos-Dvali (ADD) framework with $n$ large extra dimensions and a fundamental gravitโ€ฆ

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Building and maintaining a System of Intracellular Compartments

Amit Kumar, Madan Rao ยท 2026

Organelle patterning and its heritability remain central mysteries in cell biology, highlighting the fundamental tension between genetic inheritance and self-assembly. Here, we explore the nonequilibrโ€ฆ

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Effect of Indium doping on structural and thermoelec-tric properties of SnTe

Diptasikha Das, A. Jana, S. Mahakal, Pallabi Sardar, J. Seal, Shamima Hussain, Kartick Malik ยท 2026

The solid state reaction method is employed to synthesize Sn1-xInxTe samples. Power Factors of synthesized samples are estimated from resistivity and thermopower data. Modifications in structural paraโ€ฆ

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Comments on "Ether of Orbifolds"

Masanori Hanada ยท 2026

We comment on a recent manuscript "Ether of Orbifolds" by Henry Lamm. In the first version, it was mistakenly claimed that the orbifold lattice Hamiltonian is not gauge invariant, and a quantity $\epsโ€ฆ

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Capacitive Pixelated CMOS Electronic Nose

M. A. Basyooni-M. Kabatas, Tao Shen, Kai Betlem, Chunyu Huang, Monique A. van der Veen, Frans Widdershoven, Murali K. Ghatkesar, Peter G. Steeneken ยท 2026

Although some of the human senses can nowadays be replaced by low-cost electronic sensors such as microphones and image sensors, a compact low-cost electronic nose (E-nose) remains elusive. In this woโ€ฆ

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Physics Preprint PDF DOI

A Surface Integrand for the Inverse KLT Kernel

Christoph Bartsch, Karol Kampf, Jiri Novotny, Jaroslav Trnka ยท 2026

We propose a loop-level generalization of the inverse string theory Kawai-Lewellen-Tye (KLT) kernel: the planar inverse KLT integrand. The integrand is defined constructively via a novel Berends-Gieleโ€ฆ

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Physics Preprint PDF DOI

Deep and Sparse Denoising Benchmarks for Spectral Data Cubes of High-z Galaxies: From Simulations to ALMA observations

Arnab Lahiry, Tanio Diaz-Santos, Jean-Luc Starck, Niranjan Chandra Roy, Daniel Angles-Alcazar, Grigorios Tsagkatakis, Panagiotis Tsakalides ยท 2026

Beyond cosmic noon, galaxies appear as faint whispers amid noise, yet this epoch is key to understanding massive galaxy assembly. ALMA's sensitivity to cold dust and [C II] emission allows us to probeโ€ฆ

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Research of the Behavior of the Effective Potential in Systems with Phase Transitions through the Prism of A--D--E Type Singularities

T. V. Obikhod ยท 2026

Detecting a scalar singlet interacting through the Higgs portal demands a pivot from conventional particle detection strategies to a comprehensive examination of the effective potential's landscape. Tโ€ฆ

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Carbon Capture from wet vapors

Silvina Gatica ยท 2025

We present molecular dynamics simulations of the adsorption of mixed CO2-water vapors on a graphene flakes substrate, a model inspired by the microporous structure of activated carbons. Adsorption strโ€ฆ

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Hierarchical high-throughput screening of alkaline-stable lithium-ion conductors combining machine learning and first-principles calculations

Zhuohan Li, KyuJung Jun, Bowen Deng, Gerbrand Ceder ยท 2025

Solid-state batteries require lithium-ion conductors that combine high ionic conductivity with stability under harsh electrochemical and chemical conditions. Here, we investigate the chemical factors โ€ฆ

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Large gas inflow driven by a matured galactic bar in the early Universe

Shuo Huang, Ryohei Kawabe, Hideki Umehata, Kotaro Kohno, Yoichi Tamura, Toshiki Saito ยท 2025

Bar structures are present in about half of local disk galaxies and play pivotal roles in secular galaxy evolution. Bars impose a non-axisymmetric perturbation to the rotating disk and transport gas iโ€ฆ

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Mobility of Lactose in Milk Powders

Armin Afrough, Pernille Andersen, Tanja Ninette Angelika Weihrauch, Dennis Wilkens Juhl, Serafim Bakalis, Kirsten Gade Malmos, Thomas Vosegaard ยท 2025

Lactose is the major component of milk powders and is normally found to be in a glassy/amorphous state. During storage, lactose is known to participate in physicochemical processes, including crystallโ€ฆ

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Direct Detection of Mechanism-Agnostic Fast-Moving Dark Matter

Haider Alhazmi, Doojin Kim, Kyoungchul Kong, Aishah Sumayli ยท 2025

We present a comprehensive framework for interpreting electron recoil signals induced by fast-moving dark matter (DM), applicable across a wide range of theoretically motivated models. Amid both null โ€ฆ

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Joint Analysis of Optical, Near-Infrared And Mid-Infrared Variability of 4 Quasars at Redshift < 1

Lin Long, Zhen-ya Zheng, Ning Jiang, Chun Xu, Jiaqi Lin, Fang-Ting Yuan, Chunyan Jiang, Ruqiu Lin, Hai-Cheng Feng, Hengxiao Guo, Xiang Ji ยท 2025

Amid rapid advances in time-domain astronomy, multi-wavelength (e.g., optical and infrared) time-domain studies of quasars remain scarce. Here we present a systematic analysis of four quasars initiallโ€ฆ

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Heavy Water Displacement in Molecular Sieve Drying Beds at Various Humidities

Brandon Massett, Walter Shmayda ยท 2025

Tritium plays a critical role in nuclear fusion power plant designs and dryer beds are an essential tool for managing tritiated water vapor. A series of tests were performed to investigate the abilityโ€ฆ

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RGC: a radio AGN classifier based on deep learning. I. A semi-supervised model for the VLA images of bent radio AGNs

M.S. Hossain, M.S.H. Shahal, A. Khan, K.M.B. Asad, P. Saikia, F. Akter, A. Ali, M.A. Amin, A. Momen, M. Hasan, A.K.M.M. Rahman ยท 2025

Wide-angle tail (WAT) and narrow-angle tail (NAT) radio active galactic nuclei (RAGNs) are key tracers of dense environments in galaxy groups and clusters, yet no machine-learning classifier of bent Rโ€ฆ

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Enhancing Direct Air Capture through Potassium Carbonate Doping of Activated Carbons

N. van Dongen, A. J. F. van Hoof, S. Calero, J. M. Vicent-Luna ยท 2025

Direct air capture of carbon dioxide (CO$_2$) is one of the most promising strategies to mitigate rising atmospheric CO$_2$ levels. Among various techniques, adsorption using porous materials is a viaโ€ฆ

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The Role of Spiral Arms in Galaxies II: Similarities Amid Diversity

Bingqing Sun, Daniela Calzetti, Andrew J. Battisti ยท 2025

The role of spiral arms in galaxies -- whether they enhance star formation efficiency or primarily act as material gatherers -- remains an open question. Observational studies have yielded ambiguous rโ€ฆ

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A CFD model for heat and mass transfer leading to plume formation within Wet Cooling Towers

Luc Favre (CEREA, ENPC), Martin Ferrand (CEREA, ENPC, EDF R, D MFEE) ยท 2025

The crucial role played by Wet Cooling Towers (WCT) in many electricity production plants (e.g. nuclear power plants) make them a key parameter in the industrial design of such facilities. Their impacโ€ฆ

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Towards Accurate and Scalable High-throughput MOF Adsorption Screening: Merging Classical Force Fields and Universal Machine Learned Interatomic Potentials

Satyanarayana Bonakala, Mohammad Wahiduzzaman, Taku Watanabe, Karim Hamzaoui, Guillaume Maurin ยท 2025

High-throughput computational screening (HTCS) of gas adsorption in metal-organic frameworks (MOFs) typically relies on classical generic force fields such as the Universal Force Field (UFF), which arโ€ฆ

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