Tootfinder

Der Kampf der auf Glitzereinhörnern reitenden Glitzervampire gegen die Wer-und-Was-Wölfe auf Minotauren¹ mußte aufgrund einer spontanen Sonnenfinsternis leider verschoben werden.
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¹oder umgekehrt, wie beim Sex darf jeder mal unten sein.

Renormalization of bosonic quadratic Hamiltonians involving rank-one perturbations
Thomas Gamet (UMPA-ENSL)
https://arxiv.org/abs/2506.08590 https://

Renormalization of bosonic quadratic Hamiltonians involving rank-one perturbations
In this article, we study the renormalization of a bosonic quadratic Hamiltonian with an ultraviolet divergence. The Hamiltonian is composed of the sum of a free energy and the square of the smeared field operator. We explicitly diagonalize the Hamiltonian via Bogoliubov transformations, and the diagonalized Hamiltonian is easier to study. We show a renormalization of both the energy and the coupling constant depending on the form factor of the interaction.

This https://arxiv.org/abs/2503.17834 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Gauge preservation in renormalization for Yang-Mills and gravity theories
In the present work, multiplicative renormalization \cite{dixon} for Yang-Mills theories is reviewed. While this subject is not new, it is suggested that a clear understanding of these methods leads to a systematic way for interpreting the counter terms needed for non multiplicative renormalization of quantum gravity, for models such as \cite{dewitt}-\cite{stelle2}. These models are renormalizable but contain apparent instabilities leading to possible unitarity loss, an earlier analog is \cite{…

@… @… ob Russland sich selbst ruinieren will oder lieber einen Systemchange macht, ist deren Problem. Putin wird sich nicht mehr ändern; er hat seine Ziele 1000x klar gestellt durch Aussagen und Aktion: die "abtrünnigen&quot…

RG evolution and effect of intermediate new physics on $\Delta B=2$ six-quark operators
Mathew Thomas Arun, Shyam M, Ritik Pal
https://arxiv.org/abs/2506.10105

RG evolution and effect of intermediate new physics on $ΔB=2$ six-quark operators
The recent identification of possible 11 neutron-antineutron ($n$-$\bar{n}$) oscillation candidate events at Super-Kamiokande has renewed the interest in $ΔB = 2$ transitions. In this work, we analyze the Renormalization Group (RG) running of mass dimension-9 six-quark operators, in $\bar{MS}$ scheme, that generate processes like $nn\to π^0π^0$, deuteron decay, $n$-$\bar{n}$ oscillations etc, evolving them from the electroweak scale to baryon number violating scale ($\mathcal{O}(10^3~\text{T…

Renormalized Perturbation Theory at Field-level: the LSS bootstrap in GridSPT
Matteo Peron, Takahiro Nishimichi, Massimo Pietroni, Atsushi Taruya
https://arxiv.org/abs/2506.07105 …

Renormalized Perturbation Theory at Field-level: the LSS bootstrap in GridSPT
We present a first step toward field-level cosmological inference beyond the standard $Λ$CDM model, focusing on optimizing precision tests in the nonlinear regime of large-scale structure (LSS). As an illustrative case, we study the model-independent ``bootstrap'' coefficient of the second-order perturbation theory (PT) kernel for matter in real space, which we use as a proxy for new physics effects in the nonlinear sector. We discuss in details the ultraviolet (UV) cutoff dependence induced b…

Tensor Renormalization Group Meets Computer Assistance
Nikolay Ebel, Tom Kennedy, Slava Rychkov
https://arxiv.org/abs/2506.03247 https://

Tensor Renormalization Group Meets Computer Assistance
Tensor renormalization group, originally devised as a numerical technique, is emerging as a rigorous analytical framework for studying lattice models in statistical physics. Here we introduce a new renormalization map - the 2x1 map - which coarse-grains the lattice anisotropically by a factor of two in one direction followed by a 90-degree rotation. We develop a novel graphical language that translates the action of the 2x1 map into a system of inequalities on tensor components, with rigorous e…

This https://arxiv.org/abs/2504.01139 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Power Spectra in Double-Field Inflation Using Renormalization-Group Techniques
A perturbative strategy for inflation described by two-inflaton fields is developed using a mathematical analogy with the renormalization-group. Two small quantities, $α$ and $λ$, corresponding to standard slow-roll parameters are defined and systematic expansions of all inflationary quantities in terms of powers of $α$ and $λ$ are found. No other slow-roll parameters are needed. To illustrate this perturbative method in the multi-field context, we adopt a simple two-inflaton model with qua…

On the interplay between the BFKL resummation and high-energy factorization in Mueller-Navelet dijet production
A. A. Chernyshev, M. A. Nefedov, V. A. Saleev
https://arxiv.org/abs/2506.10458

On the interplay between the BFKL resummation and high-energy factorization in Mueller-Navelet dijet production
We study the interplay between the high-energy resummation based on the BFKL equation and initial state radiation effects, taken into account within the framework of the high-energy factorization, in the production of Mueller-Navelet dijets at hadron colliders. We use the solution of the NLO BFKL equation built out of eigenfunctions perturbatively constructed up to NLO to avoid the need for a special renormalization scale setting. We demonstrate that the various data sets from the FNAL Tevatron…

This https://arxiv.org/abs/2402.15474 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Functional renormalization group study of the quark-meson model with omega and rho vector mesons
We employ the functional renormalization group flow equations to investigate the phase structure of the two-flavor quark-meson model in the presence of a finite isospin chemical potential, incorporating interactions with omega and rho vector mesons. For comparison, we also compute the phase diagram in the chiral limit using the mean-field approximation. Our findings demonstrate that omega and rho mesons affect the phase structure in markedly distinct ways, and the introduction of an isospin che…