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Physics Preprint PDF DOI

Ghost Degrees of Freedom Without Quantum Runaway: Exact Moment Bounds from an Operator Conservation Law

Christopher Ewasiuk, Stefano Profumo ยท 2026

We prove an exact quantum conservation law for a harmonic oscillator coupled to a ghost degree of freedom: a second classical conserved quantity lifts to a quantum operator that commutes with the Hamiโ€ฆ

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Skull-Conforming Acoustic Holographic Lenses for Transcranial Targeting

Ceren Cengiz, Mihir Pewekar, Hrishikesh Kulkarni, Yunruo Ni, Nathan Sambo, Adam Maxwell, Eli Vlaisavljevich, Wynn Legon, Shima Shahab ยท 2026

Transcranial focused ultrasound (tFUS) offers noninvasive access to deep brain circuits but remains limited by skull-induced phase aberration, acoustic impedance mismatch, and poor volumetric control โ€ฆ

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Physics Preprint PDF DOI

Local Electroneutrality Violation as a Universal Constraint in Confined Electrolytes

M. Lozada-Cassou ยท 2026

We show that finite-size violations of local electroneutrality in confined electrolytes are governed by the topology of the confining domain, yielding a universal hierarchy of deviations across spheriโ€ฆ

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Physics Preprint PDF DOI

Variational Principles for Shock Dynamics in Compressible Euler Flows

Francois Gay-Balmaz, Cheng Yang ยท 2026

Hamilton's principle plays a central role in fluid mechanics as a fundamental tool for deriving governing equations, analyzing conservation laws, and designing structure-preserving numerical schemes. โ€ฆ

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Predicting co-segregation in multicomponent alloys with solute-solute interactions

Zuoyong Zhang, Chuang Deng ยท 2026

The co-segregation of impurities in multicomponent alloys has been widely recognized as an effective strategy for tailoring material properties. However, quantitative predictions of co-segregation behโ€ฆ

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The phase diagram of confining holographic theories on constant curvature manifolds in the presence of a $\theta$-angle

Ahmad Ghodsi, Elias Kiritsis, Francesco Nitti ยท 2026

Large families of confining holographic QFTs, described by Einstein-Dilaton gravity, are considered on constant-curvature manifolds in the presence of a $\theta$-angle. The space of ground states of sโ€ฆ

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Controlling microgel morphology and swelling behavior by copolymerization

Domenico Truzzolillo, Thomas Hellweg, Julian Oberdisse ยท 2026

The thermosensitive behavior of microgel particles suspended in solvents, i.e. their temperature-dependent swelling properties, has triggered ongoing interest in industry and academia over the past foโ€ฆ

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Fast-Cooling Synchrotron in Decaying Magnetic Fields: Implications for the GRB Spectral Distribution

Jia-Ming Chen, Ke-Rui Zhu, Zhao-Yang Peng, Yong-Gang Zheng, Yun-Lu Gong, Shan Chang, Shi-Ting Tian, Li Zhang ยท 2026

The prompt-emission spectra of gamma-ray bursts (GRBs) are commonly described by the empirical Band function. The typical low-energy spectral index is $\sim -1$, which poses a challenge to standard syโ€ฆ

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Quasi-Periodic Microstructures in Pulsar Emission: Automated Detection and Archival Survey

Amarnath, Yogesh Maan ยท 2026

The study of quasi-period microstructures in pulsars offers valuable insights into the underlying emission mechanism. However, identifying these features through manual inspection of the intensity timโ€ฆ

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Atomic-scale origin of charge density wave-driven metal-semiconductor transition in an incommensurately modulated metal-organic framework

Ling Zhang, Zeyue Zhang, Liu He, Bin Jiang, Yingchao Wang, Jiaxiang Zhang, Huimin Qi, Chao Zhang, Jinkun Guo, Hao Chen, Yunlong Fan, Yanran Shen, Hongli Jia, Guobao Li, Yu-Qing Zheng, Julius J. Oppenheim, Tianyang Chen, Jian Wang, Lei Sun, Junliang Sun, Jin-Hu Dou ยท 2026

The intrinsic incommensurate charge density wave in metal-organic frameworks has remained elusive due to the lack of direct evidence linking atomic-scale structural modulation to macroscopic electroniโ€ฆ

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Electronic structure and oxidation states in high-pressure synthesized isostructural CeCN$_5$ and TbCN$_5$

Amanda Ehn, Florian Trybel, Talha Bin Masood, Leonid V. Pourovskii, Igor A. Abrikosov ยท 2026

Understanding the behavior of 4$f$ electrons in materials containing rare earth elements is one of the fundamental questions within condensed matter physics. In this work the electronic properties of โ€ฆ

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Cross Waveguide Design for Color-Centers in Diamond for Photonic Quantum Computing

Alessio Miranda, Ryoichi Ishihara, Salahuddin Nur ยท 2026

Color centers in diamond are a promising platform for quantum computing applications because of their optical and spin properties. However, diamond presents some technological challenges that limit itโ€ฆ

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Generalized PT-symmetric nonlinear Dirac equation: exact solitary waves solutions, stability and conservation laws

Fernando Carreno-Navas, Siannah Penaranda, Renato Alvarez-Nodarse, Niurka R. Quintero ยท 2026

We derive an exact solitary wave solution for the $\PTb$-symmetric nonlinear Dirac equation with a scalar-scalar interaction. We consider a power-law nonlinearity of the form $|\bar{\Psi}\,\Psi|^{k}\,โ€ฆ

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Hamiltonian formulation for scalar and two-form gauge fields coupled to 3d gravity

Omar Rodriguez-Tzompantzi ยท 2026

We develop a systematic Hamiltonian formulation for a gravitating topological matter system in three-dimensional spacetime, coupling a scalar gauge field and a rank-2 antisymmetric gauge field to Einsโ€ฆ

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Confinement in a finite duality cascade

Fabrizio Aramini, Riccardo Argurio, Matteo Bertolini, Pietro Moroni, Valdo Tatitscheff ยท 2026

We provide several consistency checks of confining dynamics in a recently conjectured holographic dual of a four-dimensional ${\cal N}=1$ supersymmetric gauge theory that flows from a conformal manifoโ€ฆ

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Magnetism and symmetry of superconducting gap in LaFeAsO from dynamical mean-field theory

S. L. Skornyakov, V. I. Anisimov, A. A. Katanin ยท 2026

By employing a combined method of density functional theory and dynamical mean field theory (DFT+DMFT) we investigate the effect of electronic correlations on the magnetic and superconducting propertiโ€ฆ

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Fractional motions of an active particle on the quantum vortex

Yun Jeong Kang, Sung Kyu Seo, Kyungsik Kim ยท 2026

We analytically investigate the diffusive motion inferred from experimental observations of active particles driven by quantum vortices on the surface of superfluid helium. We first study the dynamicaโ€ฆ

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New bounds for the area of MOTS and generalized ultra-massive spacetimes

Jose M. M. Senovilla ยท 2026

Bounds for the area of general closed marginally trapped surfaces (MTSs) are presented. They do not require any stability condition, and are determined by a constant that depends on a particular compoโ€ฆ

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Bose metal near pair-density-wave order in a spin-orbit-coupled Kondo lattice

Piers Coleman, Aaditya Panigrahi, Alexei Tsvelik ยท 2026

We show that a three-dimensional superconductor with a non-Abelian SU(2) order parameter can support an extended resistive regime a Bose metal, in which transport is carried by bosonic electron-Majoraโ€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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