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Physics Preprint PDF DOI

Quantum integrable matrix models of spinor Bose gases in one spatial dimension

Hannes Koper, Thomas Gasenzer · 2026

Degenerate spinor Bose gases with repulsive density-density interaction and anti-ferromagnetic spin-spin coupling in one spatial dimension are shown to be described by a quantum integrable matrix exte…

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Physics Preprint PDF DOI

Magnonic Gottesman-Kitaev-Preskill states

Zi-Xu Lu, Gang Liu, Matteo Fadel, Jie Li · 2026

Bosonic quantum error correction encodes a logical qubit in an oscillator, avoiding the hardware overhead of large qubit arrays. Among such encodings, Gottesman-Kitaev-Preskill (GKP) states are paticu…

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Physics Preprint PDF DOI

Pauli equation in spaces of constant curvature and extended Nikiforov-Uvarov method

Abdaljalel E. Alizzi, Zurab K. Silagadze · 2026

We apply the extended Nikiforov-Uvarov method to the non-relativistic limit of the Dirac equation with a Coulomb potential in spaces of constant curvature. In this case, the radial equation reduces to…

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Physics Preprint PDF DOI

Finite Imaginary-Time Evolution for Polynomial Unconstrained Binary Optimization

Jaehee Kim, Juhyeon Kim, Gwonhak Lee, Kyunghyun Baek, Daniel K. Park, Jeongho Bang, Joonsuk Huh · 2026

Imaginary-time evolution is a standard primitive for ground-state preparation but is nonunitary, precluding direct quantum implementation. We develop Finite Imaginary-Time Evolution (FinITE), a finite…

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Physics Preprint PDF DOI

Dual role of core electrons in electronic friction

Runfeng Zhou, Emilio Artacho · 2026

Non-equilibrium energy dissipation in multi-shell swift-ion/matter systems remains a fundamental yet incompletely understood problem, with electronic stopping power $\mathcal{S}_\text{e}$ as a relevan…

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Physics Preprint PDF DOI

Clifft: Fast Exact Simulation of Near-Clifford Quantum Circuits

Bradley A. Chase, Farrokh Labib · 2026

Exact classical simulation of fault-tolerant quantum circuits remains limited by a tradeoff between exponential state vector scaling, exponential $T$-count scaling in stabilizer-rank approaches, and p…

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AI & Data Science Preprint PDF DOI

Multiple Additive Neural Networks for Structured and Unstructured Data

Janis Mohr, Jorg Frochte · 2026

This paper extends and explains the Multiple Additive Neural Networks (MANN) methodology, an enhancement to the traditional Gradient Boosting framework, utilizing nearly shallow neural networks instea…

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Mathematics Preprint PDF DOI

Solution to the Erdos problem on distinct residues of factorials

Vyacheslav M. Abramov · 2026

Paul Erdos posed the following question: Is there a prime number $p>5$ such that the residues of $2!$, $3!$,\ldots, $(p-1)!$ modulo $p$ all are distinct. In this short note, we give the negative answe…

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Physics Preprint PDF DOI

Exponentially improved quantum simulation of scalar QFT

Qing-Hong Cao, Ying-Ying Li, Xiaohui Liu, Liang-Qi Zhang, Ke Zhao · 2026

Quantum simulations of scalar quantum field theories (QFT) provide important benchmarks for demonstrating quantum advantage. We revisit digitization in the occupation basis, which is typically hindere…

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Physics Preprint PDF DOI

Solving a Linear System of Equations on a Quantum Computer by Measurement

Alain Giresse Tene, Thomas Konrad · 2026

We present a variational algorithm for fault tolerant quantum computing to solve a system of linear equations which directly maximises the parameters of the target fidelity. This so-called measurement…

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Education Preprint PDF DOI

A Pedagogical MKS-based Electromagnetic Unit Convention with $\epsilon_0 = \mu_0 = 1/c$

Alisher Sanetullaev (New Uzbekistan University) · 2026

We propose a pedagogical, rationalized MKS-based convention for electromagnetic quantities designed to reduce cognitive load in undergraduate undergraduate electromagnetism. By setting vacuum constant…

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Physics Preprint PDF DOI

An Exponential Advantage for Adaptive Tomography of Structured States under Pauli Basis Measurements

Alireza Goldar, Zhen Qin, Zhihui Zhu, Zhe-Xuan Gong, Michael B. Wakin · 2026

Broad claims about whether adaptivity helps in quantum state tomography can be misleading unless the state family, measurement architecture, and error metric are specified carefully. We study a restri…

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Physics Preprint PDF DOI

Continuous Noise Model for Quantum Circuits

Yunos El Kaderi, Andreas Honecker, Iryna Andriyanova · 2026

Quantum noise is a central challenge in quantum computing across many applications. Extensive work has examined how qubits couple to their environment, leading to decoherence and relaxation, which is …

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Physics Preprint PDF DOI

Beyond Single Trajectories: Optimal Control and Jordan-Lie Algebra in Hybrid Quantum Walks for Combinatorial Optimization

Tianen Chen, Yun Shang · 2026

The Quantum Approximate Optimization Algorithm (QAOA) follows a single, fixed evolution path, overlooking the potential computational advantage of coherently superposing multiple trajectories. Here we…

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Physics Preprint PDF DOI

Polynomial Resource Classification of Quantum Circuit Familes via Classical Shadows

Andrew Maciejunes, Ross Gore, Sachin Shetty, Barry Ezell · 2026

We compare four polynomial-resource measurement strategies, (I) $Z$-basis-only, (II) nearest-neighbor $ZZ$ (NN), (III) multi-basis ($Z$, $X$, $Y$), and (IV) classical shadows, for classifying three qu…

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Physics Preprint PDF DOI

On phase retrieval for continuous and discrete Fourier transforms

Roman Novikov, Tianli Xu · 2026

We continue studies on phase retrieval for continuous and discrete Fourier transforms in multidimensions. Using finite difference operators, we give a large class of unexpected examples of non-uniquen…

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Computer Science Preprint PDF DOI

Author response to commentaries on H is for Human and How (Not) to Evaluate Qualitative Research in HCI

Andy Crabtree · 2026

This is the authors response to commentaries on the original article H is for Human and How (Not) to Evaluate Qualitative Research in HCI, https://doi.org/10.1080/07370024.2025.2475743 Commentaries we…

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Physics Preprint PDF DOI

The Classification of Pauli Stabilizer Codes: A Lattice and Continuum Treatise

Bowen Yang, Matthew Yu · 2026

We classify mobile Pauli stabilizer codes up to gapped interfaces and coarse-graining using the framework of algebraic $\mathrm{L}$-theory. We compare this classification with that of framed TQFTs, th…

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Physics Preprint PDF DOI

Singlet-triplet oscillations in multivalley Si double quantum dots

{L}ukasz Cywinski, Mats Volmer, Tom Struck, Giordano Scappucci, Lars R. Schreiber · 2026

Charge separation from the $(4,0)$ to the $(3,1)$ state in a Si/SiGe double quantum dot is commonly used for initialization of spin qubits and Pauli-spin-blockade readout. It was used in recent experi…

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Physics Preprint PDF DOI

Mass spectra of charged mesons and the quenching of vector meson condensation via exact phase-space diagonalization

Jingyi Chao, Kun Xu · 2026

We investigate the dynamics and mass spectra of charged pseudoscalar ($\pi^+$) and vector ($\rho^+$) mesons in a background magnetic field at finite temperature using the two-flavor Nambu-Jona--Lasini…

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