2025-10-22 04:22 |
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2025-10-21 04:04 |
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Effects of Radiative Corrections on Starobinsky Inflation
/ Ellis, John (King's Coll. London ; CERN) ; Gherghetta, Tony (U. Minnesota, Minneapolis (main)) ; Kaneta, Kunio (Niigata U.) ; Ke, Wenqi (U. Minnesota, Minneapolis (main)) ; Olive, Keith A. (U. Minnesota, Minneapolis (main))
We analyze radiative corrections to the Starobinsky model of inflation arising from self-interactions of the inflaton, and from its Yukawa couplings, $y$, to matter fermions, and dimensionful trilinear couplings, $κ$, to scalar fields, which could be responsible for reheating the Universe after inflation. [...]
UMN-TH-4511/25 ; FTPI-MINN-25/13 ; KCL-PH-TH/2025-39 ; CERN-TH-2025-198 ; arXiv:2510.15137.
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2025-10-15 04:29 |
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2025-10-14 10:17 |
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HOPPET v2.0.0 release note
/ Karlberg, Alexander (CERN) ; Nason, Paolo (INFN, Milan Bicocca ; Milan Bicocca U. (main)) ; Salam, Gavin (U. Oxford (main)) ; Zanderighi, Giulia (Garching, Max Planck Inst. ; Munich, Tech. U.) ; Dreyer, Frédéric (Unlisted, US)
We document the three main new features in release 2.0.0 of the HOPPET parton distribution function evolution code, specifically support for N$^3$LO QCD evolution in the variable flavour number scheme, for the determination of hadronic structure functions for massless quarks up to N$^3$LO, and for QED evolution to an accuracy phenomenologically equivalent to NNLO QCD. [...]
arXiv:2510.09310 ; CERN-TH-2023-237 ; MPP-2023-285 ; OUTP-23-15P.
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2025-10-11 04:43 |
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2025-10-10 04:47 |
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2025-10-10 04:44 |
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2025-10-10 04:31 |
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Non-singlet vector current in lattice QCD: $\mathrm{O}(a)$-improvement from large volumes
/ Harris, Tim (ETH, Zurich (main)) ; Meyer, Harvey B. (CERN ; U. Mainz, PRISMA ; Helmholtz Inst., Mainz)
In previous work, we determined the improvement coefficients $c_\mathrm{V}$ and $c_{\tilde{\mathrm{V}}}$ required for the massless $\mathrm{O}(a)$-improvement of the local and point-split discretizations of the non-singlet vector current for $N_\mathrm{f}=3$ non-perturbatively $\mathrm{O}(a)$-improved Wilson fermions and the Lüscher-Weisz gauge action, using ensembles of large-volume configurations generated by the Coordinated Lattice Simulations (CLS) initiative. [...]
CERN-TH-2025-189 ; MITP-25-060 ; arXiv:2510.06869.
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2025-10-08 04:09 |
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2025-10-08 04:09 |
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