physics.atom-ph papers | Gist.Science

The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.

At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.

Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.

🔬 atomic physics

Cavity-induced intertwining of density and pairing order in a degenerate Fermi gas

This study demonstrates through numerical simulations that cavity-induced interactions in a transversely driven degenerate Fermi gas can control the onset and nature of self-organization, leading to either sequential or joint density-pairing instabilities that result in intertwined charge-density-wave and pair-density-wave orders, including localized phases that suppress long-range superfluid coherence.

Sankalp Sharma, Farokh Mivehvar, Helmut Ritsch, Tomasz Wasak2026-09-17

🔬 applied physics

Ancilla-assisted dark-state quantum gates in ultracold polar molecules

This paper proposes a scalable, high-fidelity two-qubit entangling gate for optically trapped ultracold polar molecules that utilizes a novel ancilla-assisted dark-state mechanism to generate entanglement by driving only the ancilla qubit, with potential extension to multi-qubit gates.

Yan Lu, Xiao-Feng Shi2026-09-17

🔬 atomic physics

Derivations of Bloch (Majorana--Bloch) equation, von Neumann equation, and Schrödinger--Pauli equation

This paper mathematically derives the space-independent von Neumann and Schrödinger–Pauli equations for electron spin from the classical Bloch (Majorana–Bloch) equation, while also presenting their formulations within a co-quantum dynamic framework and extending the analysis to include nonlinear induction equations with signum branching functions.

Lihong V. Wang2026-09-16

🔬 atomic physics

Searching for new physics with contact-free transitions in muonic atoms

This paper presents a feasibility study demonstrating how recent advances in quantum-sensing technologies can enable stringent comparisons between theory and experiment for contact-free transitions in muonic atoms, thereby probing new physics in spin-independent muon-proton interactions and disentangling fundamental constants from beyond-Standard-Model searches.

Noam Burger, Ben Ohayon2026-09-16

🔬 atomic physics

Orbital-angular-momentum partition in hydrogen photoionization by a monochromatic vortex beam

This paper presents a center-of-mass-resolved theory of hydrogen photoionization by vortex beams, demonstrating that atomic recoil and translational motion are critical for understanding optical orbital angular momentum transfer, often directing it to the proton rather than the electron and revealing that pure electron vortices are preparation-dependent limits rather than universal outcomes.

Zhongchen Xing, Chengyin Wu, Zheng Li, Marcelo F. Ciappina2026-09-16

🔬 atomic physics

Optimal Linear-Rate Conversion of Unknown Mixed Qubit States via SWAP Tests

This paper establishes that the optimal linear-rate conversion of unknown mixed qubit states (both concentration and dilution) is determined by the eigenvalues of the complex right-logarithmic-derivative Fisher information matrix and can be achieved using only SWAP tests and ancillary maximally mixed qubits, thereby revealing that the matrix's antisymmetric imaginary part encodes essential geometric information beyond statistical distance.

Sujay Kazi, Iman Marvian2026-09-16

🔬 atomic physics

Improved calculation of the hyperfine structure of muonic helium

This paper presents improved theoretical calculations of the hyperfine structure in the ground state of muonic helium using second-order perturbation theory, which successfully reduces the discrepancy between theoretical predictions and recent experimental measurements.

F. A. Martynenko, K. A. Seredina, A. P. Martynenko2026-09-16

🔬 atomic physics

Angle-of-Arrival Determination of Radio-Frequency Fields Using Stark-Shifted Rydberg-EIT Spectra

This paper demonstrates a compact, phase-independent method for determining the magnitude of the angle of arrival of radio-frequency fields by exploiting the angle-dependent spectral amplitudes of Stark-shifted Rydberg-EIT resonances in a subwavelength cesium vapor cell, achieving angular uncertainties between 0.6° and 2° across frequencies from 1.27 to 4 GHz.

Rajavardhan Talashila, Zoya Popovic, Nikunjkumar Prajapati, Noah Schlossberger, Christopher L. Holloway2026-09-16

🔬 atomic physics

Exact Breit-Rabi formulae for the nitrogen-vacancy center in diamond

This paper presents exact, closed-form expressions for the hyperfine energy eigenvalues and eigenstates of the nitrogen-vacancy center in diamond for both nitrogen-14 and nitrogen-15 isotopes under an axial magnetic field, eliminating the need for the numerical methods and analytic approximations previously required.

Alex Tritt, Lincoln D. Turner, Michael S. J. Barson2026-09-15

🔬 atomic physics

Phase-Sensitive Heterodyne Detection of MW using EIT Harmonics in Rydberg Atoms

This paper investigates the generation and characterization of higher-order harmonics in Rydberg atom EIT systems driven by dual microwave fields, demonstrating that these harmonics exhibit phase multiplication and power-broadened bandwidths, thereby offering enhanced sensitivity for phase-sensitive microwave detection.

Mangesh Bhattarai, Rishav Hui, Sumanta Khan, Vineet Bharti, Vasant Natarajan, Kanhaiya Pandey2026-09-15

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