Tootfinder

AdS$\times$S Mellin Bootstrap, Hidden 10d Symmetry and Five-point Kaluza-Klein Functions in $\mathcal{N}=4$ SYM
Bruno Fernandes, Vasco Goncalves, Zhongjie Huang, Yichao Tang, Joao Vilas Boas, Ellis Ye Yuan
https://arxiv.org/abs/2507.14124

AdS$\times$S Mellin Bootstrap, Hidden 10d Symmetry and Five-point Kaluza-Klein Functions in $\mathcal{N}=4$ SYM
We propose an AdS$\times$S factorization formula at the level of the generating function for correlators with arbitrary Kaluza-Klein configurations, and implement it in the supergravity limit of $\mathcal{N}=4$ super Yang-Mills. By incorporating this mechanism into Mellin space bootstrap, together with an observed $Z_2$ symmetry under AdS$\ \leftrightarrow\ $S, we manage to simultaneously work out unified formulas both for all five-point half-BPS correlators and for all four-point correlators w…

Extra-natural production of superheavy Kaluza-Klein particles
Yusuke Yamada
https://arxiv.org/abs/2508.11206 https://arxiv.org/pdf/2508.11206

Extra-natural production of superheavy Kaluza-Klein particles
Gauge fields in extra compact dimensions can drive inflation in the four-dimensional (4D) non-compact spacetime, a scenario known as extra-natural inflation. A time-dependent gauge field configuration generates the electric field along the compact dimension, enabling the production of Kaluza-Klein (KK) particles charged under the field via the Schwinger effect. We construct the extra-natural inflation model within a five-dimensional (5D) quantum electrodynamics (QED) framework coupled to gravit…

Inflation and Dark Energy from Loop Quantum Kaluza-Klein Cosmology
Shengzhi Li, Yongge Ma, Faqiang Yuan, Xiangdong Zhang
https://arxiv.org/abs/2508.07962 https://

Inflation and Dark Energy from Loop Quantum Kaluza-Klein Cosmology
The five-dimensional loop quantum Kaluza-Klein cosmology is constructed based on the symmetric reduction of the connection formulation of the full theory. Through semiclassical analysis, the effective scalar constraint for the cosmological model coupled with a dust field is derived, incorporating the quantum fluctuations of geometry as a subleading order correction. It demonstrates that the quantum model has the correct classical limit. The explicit solutions to the equations of motion show tha…

Embedding Signature-Changing Manifolds: A Braneworld and Kaluza-Klein Perspective
N. E. Rieger
https://arxiv.org/abs/2508.08662 https://arxiv.org/pdf/2508.…

Embedding Signature-Changing Manifolds: A Braneworld and Kaluza-Klein Perspective
We investigate a class of semi-Riemannian manifolds characterized by smooth metric signature changes with a transverse radical, This class includes spacetimes relevant to cosmological models such as the Hartle-Hawking "no boundary" proposal \cite{Hartle Hawking -- Wave function of the Universe}, where a Riemannian manifold transitions smoothly into a Lorentzian spacetime without boundaries or singularities. For this class, we prove the existence of global isometric embeddings into higher-dimens…

On the Determination of Collisional Stopping Power via Kaluza-Klein Theory
Seyda Elife G\"on\"ul, Huriye G\"ursel
https://arxiv.org/abs/2508.05701 https://…

On the Determination of Collisional Stopping Power via Kaluza-Klein Theory
In this work, the tools of general relativity are used to analytically derive collisional stopping power. We start from a Kaluza-Klein inspired, five-dimensional diffeomorphism-invariant action, and upon compactification, obtain a four-dimensional effective theory in which the matter fields are treated to be brane-localized. The medium response to the projected electron is encoded in symmetric tensor fields coupled covariantly to both electromagnetic and fermionic parts via Lagrangian-derived i…

Dimensional reduction of the M-theory Chern-Simons term at order $\ell_p^6$
Mohammad R. Garousi
https://arxiv.org/abs/2509.13726 https://arxiv.org/pdf/2509…

Dimensional reduction of the M-theory Chern-Simons term at order $\ell_p^6$
The dimensional reduction of M-theory couplings at order $\ell_p^6$ is known to produce one-loop $α'^3$ corrections in type IIA string theory. In this paper, we perform the Kaluza-Klein reduction of the M-theory Chern-Simons coupling $t_8ε_{11} A R^4$ at this order. By meticulously accounting for non-gauge-invariant total derivative terms, we derive the complete set of corresponding one-loop, gauge-invariant couplings in the type IIA effective action. Our results not only reproduce the standa…

Cosmological abundance of primordial black holes in mixed dark matter scenarios incorporating Kaluza-Klein dark matter
Yupeng Yang, Qianyong Li, Jiali Hao, Xiujuan Li
https://arxiv.org/abs/2506.20391

Cosmological abundance of primordial black holes in mixed dark matter scenarios incorporating Kaluza-Klein dark matter
The lightest Kaluza-Klein (KK) dark matter particles and primordial black holes (PBHs) emerge as plausible candidates for dark matter. In scenarios where dark matter is a mix of KK particles and PBHs, PBHs can attract surrounding KK dark matter particles post-formation, leading to the creation of ultracompact dark matter halos (UCMHs). The distribution of KK dark matter particles within UCMHs tends to be steeper than in classical dark matter halo structures, such as the Navarro-Frenk-White mode…

Traversable Kaluza-Klein wormholes?
Christopher Simmonds (Victoria University of Wellington), Matt Visser (Victoria University of Wellington)
https://arxiv.org/abs/2508.02824 ht…

Traversable Kaluza-Klein wormholes?
Various authors have suggested that Kaluza--Klein variants of traversable wormholes might to some extent ameliorate the defocussing properties (the curvature condition violations, and implied energy condition violations) inherent in positing the existence of a traversable wormhole throat. We shall show that in a Kaluza--Klein context the price paid for completely eliminating the defocussing properties of the wormhole throat is extremely high -- the 5th dimension has to become truly enormous (fo…

Crosslisted article(s) found for hep-ph. https://arxiv.org/list/hep-ph/new
[1/1]:
- Equivalence Theorems and Double-Copy Structure in Scattering Amplitudes of Massive Kaluza-Klein S...
Kezhu Guo, Yanfeng Hang

On the Kaluza-Klein geometric theory in affine spaces
Oscar Castillo-Felisola, Aureliano Skirzewski, Jefferson Vaca-Santana
https://arxiv.org/abs/2508.04817 https://

On the Kaluza-Klein geometric theory in affine spaces
In this work, we develop a generalization of Kaluza-Klein theory by considering a purely affine framework, without assuming a prior metric structure. We formulate the dimensional reduction using the geometry of principal fiber bundles and the Ehresmann connection, introducing adapted bases that allow an explicit decomposition of tensors, vectors, and connections. This formalism provides a natural geometric definition of the electromagnetic field as the difference between the horizontal space an…

Arbitrarily Negative Energy for Small Kaluza-Klein Bubbles
Gary T. Horowitz (Ricky), Guanyu (Ricky), Lu
https://arxiv.org/abs/2507.22120 https://arxiv.or…

Arbitrarily Negative Energy for Small Kaluza-Klein Bubbles
We show that the ADM energy of a Kaluza-Klein bubble of nothing is unbounded from below even if the size of the circle at infinity and the size of the minimal sphere at the bubble are fixed. We demonstrate this by presenting a family of explicit time-symmetric initial data satisfying these boundary conditions with arbitrarily negative energy. In particular, this is true for very small bubbles, which indicates that the standard Kaluza-Klein vacuum is more unstable than previously thought.

Kaluza-Klein ansatz from Lorentzian quantum gravity on the fuzzy sphere
Chengcheng Liu, Shahn Majid
https://arxiv.org/abs/2507.21861 https://arxiv.org/pdf/…

Kaluza-Klein ansatz from Lorentzian quantum gravity on the fuzzy sphere
If Kaluza-Klein ideas were correct as an explanation of Yang-Mills and General Relativity on spacetime, the extra fibre geometry would have to be a sphere of constant size of the order of 10 Planck lengths, hence subject to quantum gravity corrections. Conversely, it was shown in previous work that modelling such corrections by noncommutative coordinates indeed forces the Kaluza-Klein cylinder ansatz form of the metric, and we now propose that the remaining restrictions needed come from quantum…

Large-Area Metal-Integrated Grating Electrode Achieving Near 100% Infrared Transmission
Karolina Bogdanowicz, Weronika Glowadzka, Tristan Smolka, Michal Rygala, Marcin Kaluza, Marek Ekielski, Oskar Sadowski, Magdalena Zadura, Magdalena Marciniak, Marcin Gebski, Michal Wasiak, Marcin Motyka, Anna Szerling, Tomasz Czyszanowski
https://arxiv.…

Large-Area Metal-Integrated Grating Electrode Achieving Near 100% Infrared Transmission
Highly transparent and conductive electrodes operating in the infrared (IR) are critically needed for a broad range of technologies, including light-emitting diodes, lasers and photodetectors, which are key building blocks of infrared cameras, LiDARs, and thermal systems such as IR heaters. While transparent conductive electrodes (TCEs) have seen substantial progress in the visible spectrum, their performance in the IR remains limited due to increased absorption and reflection caused by the pla…

A neutrino data analysis of extra-dimensional theories with massive bulk fields
Philipp Eller, Manuel Ettengruber, Alan Zander
https://arxiv.org/abs/2508.04274 https://

A neutrino data analysis of extra-dimensional theories with massive bulk fields
We present a global neutrino oscillation analysis of models with a single large extra dimension in which right-handed neutrinos possess bulk Dirac masses. Two scenarios are considered: Large Extra Dimensions with bulk masses and the Dark Dimension framework, both predicting a tower of sterile Kaluza-Klein states that mix with active neutrinos. Using data from MINOS/MINOS+, KamLAND, and Daya Bay, we perform a joint likelihood analysis. No signatures of these theories were found. Therefore, we co…

Kaluza-Klein monopole with scalar multiplet hair
Takaaki Ishii, Keiju Murata, Keita Sugawara
https://arxiv.org/abs/2507.23378 https://arxiv.org/pdf/2507.23…

Kaluza-Klein monopole with scalar multiplet hair
We construct Kaluza-Klein monopole solutions with scalar hair provied by a massive complex scalar field multiplet that minimally couples to five-dimensional Einstein gravity. Writing the scalar field multiplet in terms of the Wigner D-matrices, we introduce the ansatz of the scalar multiplet compatible with the symmetries of the Gross-Perry-Sorkin monopole, on which the scalar hair grows. We give the ansatz for a multiplet with arbitrary number of components, whereas we show numerical solutions…

Kaluza-Klein inspired a model of the inflation with the inversed power law potential in Bianchi type-I universe
Jaturaporn Wattanakumpolkij, Patinya Ma-ardlerd, Natthason Autthisin, Pornpatara Chuvala, Nutthaphat Lunrasri, Chakrit Pongkitivanichkul, Daris Samart
https://arxiv.org/abs/2506.16139

Kaluza-Klein inspired a model of the inflation with the inversed power law potential in Bianchi type-I universe
This work considers the dynamics of the gauge vector and inflaton (dilaton) fields inspired by Kaluza-Klein theory in an inflationary universe with Bianchi type-I spacetime. The inverse power-law potential of the inflaton field is used to study dynamical system analysis. As a result, all fixed points in the autonomous system are non-hyperbolic fixed points, and one cannot determine their stability. Therefore, a center manifold theory is required to analyze the stability of the dynamical system …

On classification of rank two theories with eight supercharges Part III: Seiberg-Witten geometry
Dan Xie
https://arxiv.org/abs/2508.07777 https://arxiv.org…

On classification of rank two theories with eight supercharges Part III: Seiberg-Witten geometry
We study Seiberg-Witten (SW) geometries for rank-two theories, encompassing 4D field theories as well as 5D and 6D Kaluza-Klein (KK) theories. The singular model for each SW geometry is derived from a one-parameter family of algebraic curves $y^2 = f(x,t)$, where $t$ parametrizes one dimension of Coulomb branch moduli space. The functional form of $f(x,t)$ is systematically determined through analysis of singular fibers at $t=\infty$. Two powerful computational methods enable this determination…

Bootstrap AdS Veneziano Amplitude with Arbitrary Kaluza-Klein Modes
Bo Wang
https://arxiv.org/abs/2508.14968 https://arxiv.org/pdf/2508.14968

Bootstrap AdS Veneziano Amplitude with Arbitrary Kaluza-Klein Modes
We present a derivation of the first curvature correction to the AdS Veneziano amplitude for arbitrary Kaluza-Klein (KK) modes, using a bootstrap approach based on the world-sheet representation and AdS$\times$S formalism. Our results establish a universal formula for the first order curvature correction without considering any low-lying KK configurations. We give new predictions for Wilson coefficients in the low-energy expansion. In the high-energy regime, the amplitude exhibits a universal e…

Radion Portal Freeze-Out Dark-Matter
R. Sekhar Chivukula, Joshua A. Gill, Kenn S. Goh, Kirtimaan A. Mohan, George Sanamyan, Dipan Sengupta, Elizabeth H. Simmons, Xing Wang
https://arxiv.org/abs/2507.21218

Radion Portal Freeze-Out Dark-Matter
We show that, in a consistent model of a stabilized extra-dimensional theory, the radion can serve as a natural portal between ordinary matter and WIMP dark matter. With an effective coupling scale of the Kaluza-Klein theory of 20-100 TeV, the radion portal can produce the observed relic abundance through resonant annihilation for dark matter masses up to a TeV. Existing and planned direct dark matter detection experiments cannot constrain this model. However, indirect detection limits exclude …

$AdS_3 \times S^3$ Virasoro-Shapiro amplitude with KK modes
Hongliang Jiang, De-liang Zhong
https://arxiv.org/abs/2508.06039 https://arxiv.org/pdf/2508.060…

$AdS_3 \times S^3$ Virasoro-Shapiro amplitude with KK modes
We study the first curvature correction to the string amplitude of four Kaluza--Klein (KK) modes on $AdS_3 \times S^3 \times M_4$, with $M_4=K3$ or $T^4$, in type IIB string theory, which is holographically dual to the four--point correlator $\langle \mathcal{O}_{p_1} \mathcal{O}_{p_2} \mathcal{O}_{p_3} \mathcal{O}_{p_4} \rangle$ of certain half--BPS operators in the boundary D1--D5 CFT. The result takes the form of an integral over the Riemann sphere, analogous to the flat-space Virasoro--Shap…

Hodge Duals in Spherical Compactifications
Arash Azizi
https://arxiv.org/abs/2507.06324 https://arxiv.org/pdf/2507.06324

Hodge Duals in Spherical Compactifications
We present a general formalism for computing the Hodge dual of differential forms in arbitrary dimensions subject to a spherical constraint. This problem arises naturally in Kaluza-Klein compactifications, where sphere reductions demand careful treatment of differential forms constrained to lie on embedded submanifolds. We derive an explicit expression for the Hodge dual of a $p$-form in the presence of such constraints and validate our general ansatz through illustrative examples in three dime…

Exploring black hole shadows in axisymmetric spacetimes with coordinate-independent methods and neural networks
Temurbek Mirzaev, Bobomurat Ahmedov, Cosimo Bambi
https://arxiv.org/abs/2507.02520

Exploring black hole shadows in axisymmetric spacetimes with coordinate-independent methods and neural networks
The study of black hole shadows provides a powerful tool for testing the predictions of general relativity and exploring deviations from the standard Kerr metric in the strong gravitational field regime. Here, we investigate the shadow properties of axisymmetric gravitational compact objects using a coordinate-independent formalism. We analyze black hole shadows in various spacetime geometries, including the Kerr, Taub-NUT, $γ$, and Kaluza-Klein metrics, to identify distinctive features that c…

Supersymmetry-breaking compactifications on Riemann-flat manifolds
Gianguido Dall'Agata, Fabio Zwirner
https://arxiv.org/abs/2507.02339 https://…

Supersymmetry-breaking compactifications on Riemann-flat manifolds
We consider compactifications of higher-dimensional supergravities on Riemann-flat manifolds of dimension d ($3 \le d \le 7$) that fully break supersymmetry at the classical level on a resulting D-dimensional Minkowski space. We systematically discuss consistency conditions, the Kaluza-Klein (KK) spectrum and harmonics, and the resulting one-loop effective potential $V_1$, focusing for illustration on maximal supergravity and d=3, in particular on the $T^3/Z_3$ and on the Hantzsche-Wendt manifo…