Entanglement Signatures of Kinetic-Mixing Portals in Dark Monopole Scattering
Abstract
We examine the interaction between the Standard Model (SM) fermions and the topological dark magnetic monopoles mediated via a kinetic-mixing portal to investigate the generation of quantum entanglement in particle-portal scattering. While the conventional phenomenology only takes into account total cross-sections, decay widths, and missing-energy signatures, we employ an information-theoretic approach to explain the scattering event. We quantify the quantum correlations transported over the portal boundary by calculating the Von Neumann entropy (Sent) and the subsystem purity deterioration (γ< 1) analytically. Our results demonstrate that the non-perturbative core form factor of the dark monopole controls its high-energy momentum transfer and that the Von Neumann entropy increases quadratically with the topological magnetic charge (gm2) and the kinetic-mixing parameter (ε2). This paradigm provides an information-theoretic "microscope" to restrict portal parameter spaces and explore underlying topological structures without using traditional energy signatures by establishing quantum decoherence and purity loss as new, complementary observables.
Related
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BibTeX
@misc{jangid2026entanglement,
title = {{Entanglement Signatures of Kinetic-Mixing Portals in Dark Monopole Scattering}},
author = {Shilpa Jangid and Hiroshi Okada},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.02467},
eprint = {2609.02467},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02467},
}
RIS
TY - UNPB
TI - Entanglement Signatures of Kinetic-Mixing Portals in Dark Monopole Scattering
AU - Shilpa Jangid
AU - Hiroshi Okada
PY - 2026
DA - 2026/09/02
PB - arXiv
DO - 10.48550/arxiv.2609.02467
UR - https://arxiv.org/abs/2609.02467
AB - We examine the interaction between the Standard Model (SM) fermions and the topological dark magnetic monopoles mediated via a kinetic-mixing portal to investigate the generation of quantum entanglement in particle-portal scattering. While the conventional phenomenology only takes into account total cross-sections, decay widths, and missing-energy signatures, we employ an information-theoretic approach to explain the scattering event. We quantify the quantum correlations transported over the portal boundary by calculating the Von Neumann entropy (S_ent) and the subsystem purity deterioration (γ< 1) analytically. Our results demonstrate that the non-perturbative core form factor of the dark monopole controls its high-energy momentum transfer and that the Von Neumann entropy increases quadratically with the topological magnetic charge (g_m^2) and the kinetic-mixing parameter (ε^2). This paradigm provides an information-theoretic "microscope" to restrict portal parameter spaces and explore underlying topological structures without using traditional energy signatures by establishing quantum decoherence and purity loss as new, complementary observables.
ER -