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Showing 867 results for "lu lu" in Physics
Physics Preprint PDF DOI

Basic linear algebra methods for quantum problems

Aaron Dayton, Kiana Gallagher, Sarah E. Huber, Thomas E. Baker · 2026

Making new methods for quantum problems often relies on using basic operations in linear algebra. Often these routines are hidden behind well-known libraries that have been optimized over decades. Att…

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Physics Preprint PDF DOI

How Quantum Contextuality disappears in the Classical Limit

Arthur C. R. Dutra, Roberto D. Baldijao, Marcelo Terra Cunha · 2026

The emergence of classicality is fundamentally driven by the interaction between a quantum system and its environment. Foundational open-system approaches, notably the Caldeira-Leggett model, successf…

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Physics Preprint PDF DOI

Re-examination of electronic structure of dilute Kondo transition-metal ions substituted into a Heavy Fermion compound

Kou Takubo, Shintaro Suzuki, Kohei Yamamoto, Kohei Yamagami, Masafumi Horio, Toshiaki Ina, Kiyohumi Nitta, Masaichiro Mizumaki, Eiji Ikenaga, Yosuke Matsumoto, Hiroki Wadati, Satoru Nakatsuji · 2026

Correlations between the localized and conductive spins/charges have been the central issue of various fascinating quantum phenomena found on itinerant electron systems. Here, the obvious multiplet st…

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Physics Preprint PDF DOI

On the complementary roles of anisotropic crack density and anisotropic crack driving force in phase-field modeling of mixed-mode fracture

Guk Heon Kim, Minseo Kim, Kwangsan Chun, Jaemin Kim · 2026

Phase-field models for anisotropic fracture employ two complementary mechanisms: (i) the anisotropic crack density function, controlling direction-dependent fracture resistance, and (ii) the anisotrop…

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Physics Preprint PDF DOI

Density Functional Theory Study of Lanthanide Monoxides under High Pressure: Pressure-Induced B1-B2 Transition

Sergio Ferrari, Daniel Errandonea · 2026

Using density functional theory, we study the influence of hydrostatic pressure on the crystal structure of lanthanide monoxides, focusing on the monoxides formed by the fifteen elements of the lantha…

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Physics Preprint PDF DOI

Surface-enhanced Raman scattering and density functional theory study of selected-lanthanide-citrate complexes (lanthanide: Tb, Dy, Ho, Er, Tm, Yb and Lu)

Hao Jin, Yuko S. Yamamoto · 2026

In this study, surface-enhanced Raman scattering (SERS) and density functional theory (DFT) calculations were combined to investigate the SERS spectra of Ln-citrate complexes (Ln: Tb, Dy, Ho, Er, Tm, …

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Physics Preprint PDF DOI

Tensor invariants for multipartite entanglement classification

Sylvain Carrozza, Johann Chevrier, Luca Lionni · 2026

Organising the space of entanglement structures of a multipartite quantum system is a much more challenging task than its bipartite version: while the local unitary (LU) orbit of a bipartite pure stat…

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Physics Preprint PDF DOI

The 27-qubit Counterexample to the LU-LC Conjecture is Minimal

Nathan Claudet · 2026

It was once conjectured that two graph states are local unitary (LU) equivalent if and only if they are local Clifford (LC) equivalent. This so-called LU-LC conjecture was disproved in 2007, as a pair…

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Physics Preprint PDF DOI

An alternative representation of multichannel Rydberg spectra: a modified Lu-Fano plot, applied to manganese spectroscopy

Justin D. Piel, Chris H. Greene · 2026

The well-known graphical representation called the Lu-Fano plot was originally developed for multi-channel Rydberg spectroscopy, especially in quantum defect theory. The present study shows some of th…

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Physics Preprint PDF DOI

Cryptanalysis of four arbitrated quantum signature schemes

Pierre-Alain Jacqmin, Jean Lienardy · 2026

Arbitrated quantum signature (AQS) schemes aim at ensuring the authenticity of a message with the help of an arbitrator. Moreover, they aim at preventing repudiation, both from a sender that denies th…

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Physics Preprint PDF DOI

Quantum Hypergraph States: A Review

Davide Poderini, Dagmar Bru{ss}, Chiara Macchiavello · 2026

Quantum hypergraph states extend the well-studied class of graph states by taking into account multi-qubit interactions through hyperedges. They provide a powerful framework to represent a family of q…

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Physics Preprint PDF DOI

The Structure of Circle Graph States

Frederik Hahn, Rose McCarty, Hendrik Poulsen Nautrup, Nathan Claudet · 2026

Circle graph states are a structurally important family of graph states. The family's entanglement is a priori high enough to allow for universal measurement-based quantum computation (MBQC); however,…

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Physics Preprint PDF DOI

Enhancement of superconductivity by disorder in Remeika-type quasiskutterudites

Andrzej Slebarski, Maciej M. Maska · 2026

Atomic-scale disorder is conventionally regarded as detrimental to superconductivity; however, under specific conditions, it can enhance superconducting properties. Here, we investigate the role of su…

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Physics Preprint PDF DOI

Anomalous temperature dependence of the electrical resistivity in R$_3$Co$_4$Ge$_{13}$ (R = Y, Lu) single crystals

Juliana Goncalves Dias, Shyam Sundar, Leticie Mendonca-Ferreira, Marcos A. Avila · 2026

The presence of strong disorder can significantly impact electrical conduction in metallic systems. Here, we investigate the temperature dependence of the electrical resistivity, $\rho(T)$, in nonmagn…

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Physics Preprint PDF DOI

The necessary and sufficient condition for perfect teleportation and superdense coding and all the suitable states for teleportation and superdense coding

Dafa Li · 2026

It is known that two local unitaries (LU) equivalent states possess the same amount of entanglement and can be used to perform the same tasks in quantum information theory (QIT). For a protocol for a …

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Physics Preprint PDF DOI

Transversal gates of the ((3,3,2)) qutrit code and local symmetries of the absolutely maximally entangled state of four qutrits

Ian Tan · 2026

We provide a proof that there exists a bijection between local unitary (LU) orbits of absolutely maximally entangled (AME) states in $(\mathbb{C}^D)^{\otimes n}$ where $n$ is even, also known as perfe…

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Physics Preprint PDF DOI

Understanding Interface Stability in RENi2/Ni through First-Principles Calculations

Yuta Yahagi, Yumi Katasho · 2026

Crystallographic orientation analysis revealed that DyNi2 grew epitaxially on Ni, whereas NdNi2 does not. To elucidate the microscopic origin of this contrasting behavior, we constructed atomistic mod…

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Physics Preprint PDF DOI

Substrate and cation engineering for optimizing superconductivity in infinite-layer nickelates

Viktor Christiansson, Karsten Held · 2025

In a recent experiment [Nature 642, 58 (2025)], a new record for the superconducting critical temperature $T_c$ among infinite-layer nickelates has been reported in doped SmNiO$_2$. Here, we use the c…

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Physics Preprint PDF DOI

Comparing cosmic shear nulling methods for Stage-IV surveys

Naomi Clare Robertson, Alex Hall · 2025

We present an analysis comparing nulling strategies for reducing the impact of baryon feedback on cosmic shear measurements. We consider three different approaches which aim to `null' the high-$k$ mod…

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Physics Preprint PDF DOI

Testing electron-photon exchange-correlation functional performance for many-electron systems under weak and strong light-matter coupling

Iman Ahmadabadi, I-Te Lu, Leonardo A. Cunha, Michael Ruggenthaler, Johannes Flick, Angel Rubio · 2025

We present results of a photon-free exchange-correlation functional within the local density approximation (pxcLDA) for quantum electrodynamics density functional theory (QEDFT) that efficiently descr…

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