Tootfinder

DiffLoRA: Differential Low-Rank Adapters for Large Language Models
Alexandre Misrahi, Nadezhda Chirkova, Maxime Louis, Vassilina Nikoulina
https://arxiv.org/abs/2507.23588 https…

DiffLoRA: Differential Low-Rank Adapters for Large Language Models
Differential Transformer has recently been proposed to improve performance in Transformer models by canceling out noise through a denoiser attention mechanism. In this work, we introduce DiffLoRA, a parameter-efficient adaptation of the differential attention mechanism, with low-rank adapters on both positive and negative attention terms. This approach retains the efficiency of LoRA while aiming to benefit from the performance gains of differential attention. We evaluate DiffLoRA across a broad…

Efficient RAW Image Deblurring with Adaptive Frequency Modulation
Wenlong Jiao, Binglong Li, Wei Shang, Ping Wang, Dongwei Ren
https://arxiv.org/abs/2505.24407

Efficient RAW Image Deblurring with Adaptive Frequency Modulation
Image deblurring plays a crucial role in enhancing visual clarity across various applications. Although most deep learning approaches primarily focus on sRGB images, which inherently lose critical information during the image signal processing pipeline, RAW images, being unprocessed and linear, possess superior restoration potential but remain underexplored. Deblurring RAW images presents unique challenges, particularly in handling frequency-dependent blur while maintaining computational effici…

Zak-OFDM: Low Complexity Joint Equalization of OFDM Carriers in Doubly-Spread Channels
Saif Khan Mohammed, Sandesh Rao Mattu, Nishant Mehrotra, Venkatesh Khammammetti, Robert Calderbank
https://arxiv.org/abs/2506.23045

Zak-OFDM: Low Complexity Joint Equalization of OFDM Carriers in Doubly-Spread Channels
We communicate over wireless channels by first estimating and then equalizing the effective channel. In Zak-OTFS (orthogonal time frequency space) modulation the carrier waveform is a pulse in the delay-Doppler (DD) domain, formally a quasi-periodic localized function with specific periods along delay and Doppler. When the channel delay spread is less than the delay period, and the channel Doppler spread is less than the Doppler period, the response to a single Zak-OTFS carrier provides an imag…

Polarization and depolarization of abstract simplicial complexes
V\'ictor M. L\'opez-Ant\'on, Pablo Munarriz-Senosiain, Patricia Pascual-Ortigosa, Eduardo S\'aenz-de-Cabez\'on
https://arxiv.org/abs/2507.22497

Polarization and depolarization of abstract simplicial complexes
We translate the operations of polarization and depolarization from monomial ideals in a polynomial ring to abstract simplicial complexes. As a result, we explicitly describe the relation between the Koszul simplicial complex of a monomial ideal and that of its polarization. Using the simplicial translation of depolarization we propose a way to reduce a simplicial complex to a smaller one with the same homology. This type of reduction, that can be interpreted as non-elementary collapse, can be …

Spatially-periodic states in a strongly dipolar $^{164}$Dy-$^{162}$Dy mixture
S. K. Adhikari
https://arxiv.org/abs/2507.22154 https://arxiv.org/pdf/2507.22…

Spatially-periodic states in a strongly dipolar $^{164}$Dy-$^{162}$Dy mixture
We demonstrate the formation of a novel eigenstate in a strongly dipolar binary $^{164}$Dy-$^{162}$Dy mixture, where the inter- and intraspecies dipolar lengths are larger than the corresponding scattering lengths. When this mixture is confined by a quasi-two-dimensional harmonic trap, the total density exhibits the formation of droplets on a spatially-symmetric triangular or square lattice, where each droplet is formed of a single species of atoms; two types of atoms never exist on the same la…

Effect of RKKY and dipolar interaction on the nucleation of skyrmion in Pt/Co multilayer with Ir spacer
Shaktiranjan Mohanty, Brindaban Ojha, Bhuvneshwari Sharma, Ashutosh Rath, Chandrasekhar Murapaka, Subhankar Bedanta
https://arxiv.org/abs/2507.23153

Effect of RKKY and dipolar interaction on the nucleation of skyrmion in Pt/Co multilayer with Ir spacer
Magnetic skyrmions, topologically protected spin textures, have emerged as promising candidates for next-generation spintronic applications. In this study, we investigate the stabilization of skyrmionic states in a uniquely engineered Pt/Co multilayer system with an Ir spacer, where both Ruderman Kittel Kasuya Yosida (RKKY) and dipolar interactions play a crucial role. The studied multilayer structure consists of a synthetic antiferromagnetic (SAF) configuration, where a single Ir layer facilit…

Tunable Field-Linked $s$-wave Interactions in Dipolar Fermi Mixtures
Jing-Lun Li, Georgios M. Koutentakis, Mateja Hrast, Mikhail Lemeshko, Andreas Schindewolf, Ragheed Alhyder
https://arxiv.org/abs/2506.23318

Tunable Field-Linked $s$-wave Interactions in Dipolar Fermi Mixtures
Spin mixtures of degenerate fermions are a cornerstone of quantum many-body physics, enabling superfluidity, polarons, and rich spin dynamics through $s$-wave scattering resonances. Combining them with strong, long-range dipolar interactions provides highly flexible control schemes promising even more exotic quantum phases. Recently, microwave shielding gave access to spin-polarized degenerate samples of dipolar fermionic molecules, where tunable $p$-wave interactions were enabled by field-link…

Dipolar optimal control of quantum states
H\'ector Briongos-Merino, Felipe Isaule, Bruno Juli\'a-D\'iaz, Montserrat Guilleumas
https://arxiv.org/abs/2507.22822 https…

Dipolar optimal control of quantum states
Quantum state control is a fundamental tool for quantum technologies. In this work, we propose and analyze the use of quantum optimal control that exploits the dipolar interaction of ultracold atoms on a lattice ring, focusing on the generation of selected states with entangled circulation. This scheme requires time-dependent control over the orientation of the magnetic field, a technique that is feasible in ultracold atom laboratories. The system's evolution is driven by just two independent c…

Signatures of rigidity and second sound in dipolar supersolids
G. A. Bougas, T. Bland, H. R. Sadeghpour, S. I. Mistakidis
https://arxiv.org/abs/2506.22290 …

Signatures of rigidity and second sound in dipolar supersolids
We propose a dynamical protocol to probe the rigidity and phase coherence of dipolar supersolids by merging initially separated fragments in quasi-one-dimensional (1D) double-well potentials. Simulations based on the extended Gross-Pitaevskii equation reveal distinct dynamical signatures across phases. Supersolids exhibit damped crystal oscillations following barrier removal, with the damping rate reflecting superfluid connectivity. A phase-imprinted jump additionally triggers metastable dark s…