theoretical-physics

Hello everyone, I am a 9th-grade student from Ukraine with a deep passion for theoretical physics and science fiction (especially Star Wars). Since we currently lack the technology to experimentally test higher-dimensional travel, I have spent some time developing a logical, mathematical... Read more

On D=7 supergravity: On the supergravity Lie 3-algebra (see also at M-theory supersymmetry algebra): Laura Andrianopoli, Riccardo D'Auria, Lucrezia Ravera, Hidden Gauge Structure of Supersymmetric Free Differential Algebras, JHEP 1608 (2016) 095 (arXiv:1606.07328) Laura Andrianopoli, Riccardo D'Auria, Lucrezia Ravera, More on the Hidden Symmetries of 11D Supergravity (arXiv:1705.06251) Lucrezia R…

La Profilée (LP) is a structural law of persistent identity under transformation. From three minimal assumptions — distinguishability (M1), real transformation (M2), determinable persistence relation (M3) — LP derives the complete persistence architecture: F·M·K decomposition, IR = R/(F·M·K) ≤ 1, the Frame Continuity Condition (FCC), and the two universal persistence conditions Q1 and Q2. This pa…

Physical theory does not formally distinguish two questions it implicitly treats as one: when does ordered structure exist, and when does the same ordered structure persist? This paper shows that the distinction is latent in two existing mathematical frameworks: structural stability (topological equivalence of flows) and homotopy class invariance of the order parameter. Both are domain-specific e…

On the D'Auria-Fré-Regge formulation of supergravity: Leonardo Castellani, Pietro Fré, F. Giani, Krzysztof Pilch, Peter van Nieuwenhuizen, Gauging of supergravity?, Annals of Physics 146 1 (1983) 35-77 [spire:11998, doi:10.1016/0003-4916(83)90052-0] Leonardo Castellani, Riccardo D'Auria, Pietro Fré, Supergravity and Superstrings - A Geometric Perspective, World Scientific (1991) Leonardo Castella…

This work presents a structural and mathematical analysis of the asymptotic symmetry–memory correspondence developed by Sabrina Pasterski, Andrew Strominger and Alexander Zhiboedov. The analysis is performed entirely at the level of explicit equations and functional dependence, without relying on phenomenological interpretation or conceptual assumptions. The electromagnetic and gravitational memo…

The Unified Structural Framework proposes a new grammar for understanding transformation itself. Rather than treating the universe as a collection of forces or objects, it models reality as a continuum of structural motifs—recurring patterns of motion defined by their operators, fields, and transitions. Each motif generates a field that shapes the next, forming a self‑reinforcing cycle of coheren…

We present a closed variational framework in which physical existence is defined through a unique stationary condition derived from a single quartic functional. No external fields, operators, phenomenological sectors, or auxiliary principles are introduced. Existence is identified exclusively with variational admissibility and spectral stability.

superalgebra and (synthetic ) supergeometry supergravity in dimension 6 Background on spin representations and supersymmetry: 221 2 (1983) 331-348 [doi:10.1016/0550-3213(83)90582-5] Formulation of supergravity on superspace: Moustafa A. Awada, Paul Townsend, Germán Sierra: Six-dimensional simple and extended chiral supergravity in superspace, Class. Quantum Grav. 2 (1985) L85 [doi:10.1088/0264-93…

On generalized Spin(7)-manifolds and M-theory on G₂-manifolds: On G-structures in M-theory: On D=6 supergravity: and in relation to contact geometry: Discussion of Killing spinors on globally hyperbolic Lorentzian manifolds: On duality-symmetric abelian Yang-Mills theory (“premetric electromagnetism”) in the generality allowing “U-duality-twists” among several abelian gauge fields, motivated by a…

_SSRN_. forthcomingThis work develops a unified variational formulation of Complete Detectable Spacetime Geometry (CDSG), extending prior results on admissible physical structure to a quantitative reconstruction of the Standard Model and its gravitational and cosmological extensions. The framework is based on the requirement that physically realizable processes correspond to closure-complete space…

This work proposes a conceptual framework for re-examining foundational notions in physics—namely space, time, matter, and interaction—by returning to a more primitive level: that of the minimal act. Rather than presupposing entities, fields, or spacetime as primary givens, the analysis begins from the conditions that make the occurrence of act possible. At this level, structure, act, and energy …

$1.5 Million gift is part of a campaign to establish early career chairs at Perimeter Institute

Rodolfo Russo is reader in theoretical physics at Queen Mary College, London. On the BMN limit of the AdS-CFT correspondence: On AdS-CFT dual type II supergravity-solutions corresponding to D1-D5-P bound states (“superstrata”): and on the non-supersymmetric generalization via AdS3-CFT2 duality (“microstrata”): Bogdan Ganchev, Stefano Giusto, Anthony Houppe, Rodolfo Russo, holography for non-BPS g…

Live Science spoke with Nobel prize-winning physicist David Gross, who recently received the $3 million Special Breakthrough Prize in Fundamental Physics, about the quest to unite all the forces and why humanity might not live to see a unified theory.

Introduction Sitting outside a Catholic church on the French Riviera, Carlo Rovelli jutted his head forward and backward, imitating a pigeon trotting by. Pigeons bob their heads, he told me, not only to stabilize their vision but also to gauge distances to objects — compensating for their limited binocular vision. “It’s all perspectival,” he said. A theoretical physicist affiliated with Aix-Marse…

The idea that the constants of nature are not actually constant has been around since at least the 1930s. Physicists across the decades have put forth that speed of light, the strength of the electromagnetic force, and the strength of gravity all change over time. Now, a physicist claims that changing constants explain dark energy and dark matter, both of which are just an “illusion”. Well, wow.

A visit to Prof. Dr. Kai Phillip Schmidt, Chair of Theoretical Physics Each semester, FAU President Prof. Dr. Joachim Hornegger visits professors in their institutes. He visits them there to talk about their research, to discover what is close to their heart and to get to know them better. Our series introduces you to the […]

"...More than a scientific pursuit, Mallett’s story testifies to human resilience, intellectual courage, and hope’s enduring power. Whether his theoretical time machine ever materializes, his legacy is immeasurable—inspiring countless individuals to challenge conventional limits and perceive time not as an unyielding barrier, but as a boundless frontier awaiting exploration."

Physicists are still searching for a “theory of everything” which will cleanly explain every phenomenon in existence, in principle. According to a new paper, though, they search in vain: an all-encompassing theory of everything is mathematically impossible. Let’s take a look.