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CERN Theory

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2025-07-28
12:45
Maximal parameter space of sterile neutrino dark matter with lepton asymmetries / Akita, Kensuke (Tokyo U.) ; Hamaguchi, Koichi (Tokyo U.) ; Ovchynnikov, Maksym (CERN)
Large lepton flavor asymmetries with zero total lepton asymmetry could be generated in the Early Universe. [...]
arXiv:2507.20659. - 2025 - 25.
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2025-07-26
04:55
Ultralight dark matter detection with trapped-ion interferometry / Badurina, Leonardo (Caltech) ; Blas, Diego (Barcelona, IFAE ; ICREA, Barcelona) ; Ellis, John (King's Coll. London ; CERN) ; Ellis, Sebastian A.R. (Geneva U., Dept. Theor. Phys.)
We explore how recent advances in the manipulation of single-ion wave packets open new avenues for detecting weak magnetic fields sourced by ultralight dark matter. [...]
arXiv:2507.17825 ; CALT-TH/2025-011 ; KCL-PH-TH/2025-29 ; CERN-TH-2025-125 ; AION-REPORT/2025-05. - 12.
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2025-07-25
04:07
EFT strings and dualities in 4d $\mathcal{N}=1$ / Grieco, Alessandra (Madrid, IFT ; Madrid, Autonoma U.) ; Ruiz, Ignacio (Madrid, IFT ; Madrid, Autonoma U.) ; Valenzuela, Irene (Madrid, IFT ; Madrid, Autonoma U. ; CERN)
We investigate the global structure of the states becoming light at perturbative limits of 4d $\mathcal{N}=1$ string and M-theory compactifications, identifying the different duality frames that emerge asymptotically and how they fit together in moduli space. [...]
arXiv:2504.16984 ; IFT-UAM/CSIC-25-39 ; CERN-TH-2025-086. - 80.
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2025-07-25
04:07
Thermal modifications of mesons and energy-energy correlators from real-time simulations of a $U(1)$ lattice gauge theory / Barata, João (CERN) ; Frenklakh, David (Brookhaven) ; Mukherjee, Swagato (Brookhaven)
We investigate thermal properties of a $U(1)$ lattice gauge theory in $1+1$-dimensions through real-time simulations. [...]
arXiv:2507.16890 ; CERN-TH-2025-133. - 10.
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2025-07-24
04:52
Gravitational Wave Scattering on Magnetic Fields / Domcke, Valerie (CERN) ; Garcia-Cely, Camilo (Valencia U., IFIC) ; Lee, Sung Mook (CERN)
The conversion of gravitational to electromagnetic waves in the presence of background magnetic fields is known as the inverse Gertsenshtein effect, analogous to the Primakoff effect for axions. [...]
CERN-TH-2025-142 ; arXiv:2507.16609. - 47.
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2025-07-24
04:44
Wino and Real Minimal Dark Matter Excluded by Fermi Gamma-Ray Observations / Safdi, Benjamin R. (UC, Berkeley ; LBL, Berkeley ; CERN) ; Xu, Weishuang Linda (KIPAC, Menlo Park ; SLAC)
We show that minimal, fermionic dark matter (DM) models in the $n$-dimensional representation of the weak force with zero hypercharge that make up 100% of the DM under the standard cosmological history are strongly excluded for $n < 9$. [...]
arXiv:2507.15934 ; CERN-TH-2025-137. - 20.
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2025-07-24
04:36
Symmetry energy dependence of the bulk viscosity of nuclear matter / Yang, Yumu (Illinois U., Urbana) ; Hippert, Mauricio (Rio de Janeiro, CBPF ; Rio de Janeiro State U.) ; Speranza, Enrico (CERN) ; Noronha, Jorge (Illinois U., Urbana)
We clarify how the weak-interaction-driven bulk viscosity $\zeta$ and the bulk relaxation time $\tau_\Pi$ of neutrino-transparent $npe$ matter depend on the nuclear symmetry energy. [...]
arXiv:2504.07805 ; CERN-TH-2025-078. - 12.
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2025-07-24
04:36
(Quadratically) Refined Discrete Anomaly Cancellation / Dierigl, Markus (CERN) ; Tartaglia, Michelangelo (CSIC, Madrid)
In this work we study the cancellation of non-perturbative anomalies of gravitational theories with gauge group $\mathbb{Z}_k$ in six dimensions. [...]
arXiv:2504.02934 ; CERN-TH-2025-068 ; IFT-25-35. - 44.
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2025-07-23
04:11
$Q$-operators, $q$-opers, and R-matrices in 5d $\mathcal{N}=1$ gauge theory / Jeong, Saebyeok (CERN) ; Lee, Norton (IBS, Gyeongsangbuk, CGP)
We study the quantization of the moduli space of multiplicative Higgs bundles through the lens of five-dimensional $\mathcal{N}=1$ supersymmetric gauge theories in $Ω$-background. [...]
CERN-TH-2025-138 ; arXiv:2507.15450. - 18.
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2025-07-23
04:01
Long-lived Axion-Like Particles from Tau Decays / Ema, Yohei (CERN) ; Fox, Patrick J. (Fermilab) ; Hostert, Matheus (Harvard U.) ; Menzo, Tony (Cincinnati U.) ; Pospelov, Maxim (Minnesota U.) ; Ray, Anupam (UC, Berkeley) ; Zupan, Jure (Cincinnati U.)
Axion-like particles (ALPs) are well-motivated examples of light, weakly coupled particles in theories beyond the Standard Model. [...]
arXiv:2507.15271 ; CERN-TH-2025-123 ; FERMILAB-PUB-25-0408-T ; N3AS-25-011. - 25.
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