Physics
Languages
The Latent Structure of Dictionaries: how many words do you need?
Experiments
Compact subpicometer Michelson interferometers: LIGO and such go a lot deeper, but are kilometers wide.
MICROSCOPE mission: Another test of the equivalence principle.
GENESIS: Co-location of Geodetic Techniques in Space: Big project to improve time and space reference frames. May be interesting like GINGER, dunno.
Alt
Evolution of Quantum Nonequilibrium for Coupled Harmonic Oscillators: An observable effect of pilot-wave theory?
Faraday waves and alligator water dances:
What Moves the Heavens Above?: Some alternative theory to Lambda-CringeDM.
Solar System
The Possibility of Mirror Planet as Planet Nine in Solar System:
Dark Matter in the rings of Saturn:
Travel
Exploration of M31 via Black-Hole Slingshots: It’s great to see someone dream like this…
Physical warp drives: Less unrealistic warp drives and a proof that any warp drives requires propulsion. I’m waiting for news from their research group.
Solar system Lagrange point GPS
Tributes
316: ??? some man
Non-commutative Geometry Indomitable
Papers Written by E.T. Whittaker in 1903 and 1904: Some forgotten schizo reemerges…
Dark Matter
Cotton gravity fixes rotation curves: Yeah a bit sus sounds like they just introduce another constant that can be fitted for each galaxy…
Dark matter believers on suicide watch: let’s study galaxies in the Newtonian limit, what could go wrong, am I right?
Gravity
Post-Newtonian corrections to gravitational waves: Master thesis treating gravity as an EFT with Feynman diagrams and such.
Kepler with quaternions: introducing an involution that acts only on one imaginary part of the quaternions one can reduce the Kepler problem to an harmonic oscillators with quaternion coefficients, or easily study 3d generalization of the Birkhoff-Joukowsky transform.
De Sitter gravity: homogenouity and isotropy strongly restrict possible symmetry groups for the universe. De Sitter space, a universe with positive cosmological constant, and its gravity, are explained.
OzonexOxygen: although we usually see ozone on exoplanets as indicating the presence of oxygen, and thus terrestrial conditions, the relationship between these two gases is more complex, but strongly dependent on the UV spectrum of the host star.
Potential energy of the Great Pyramid
Maxwell’s equations from spacetime geometry
Why all these prejudices against a constant?: demystifying the cosmological constant, with an introduction on the cosmic coincidence problem, which stems from dark energy and matter densities being currently, but not for long, nor since long ago, on the same magnitude.
Rydberg atoms and cosmological constant
Tuning event horizon for entanglement
Particle creation: Schwinger + Unruh + Hawking
Primordial Black holes
Detecting primordial black holes from the Earth-Moon system: Small PBH far away from the Earth-Moon binary system can be included as a perturbative term in the calculations, and their presence could induce lasting imprints on the orbits.
Black holes in the outer solar system: Around 500 AU from the Sun there seems to be an object weighting about ten times Earth, either a planet or a primordial black hole, in which case the only way to detect it would be a swarm of
Black Holes
Rechargeable black hole battery:
Nomen non est omen: why it is too soon to identify ultra-compact objects as black holes:
Fast micro-probes on light sails to measure time dilation in its surrounding.
Can a small black hole passing through Earth make noise?
Wormholes in the lab: topic to be explored, AdS/CFT could make it possible to realize duals to black holes in the form of highly entangled systems and investigate quantum gravity.
De Sitter magnetic black hole dipole: let’s say, hypothetically, I have this closed universe enclosed between two extremal black holes of equal size, that are also magnetic monopoles with opposite charge, but stay in equilibrium because of the cosmological constant: problem, leftists?
EM
Two-component Yang-Baxter maps and star-triangle relations: Circuits…
Mechanics
Beer mats make bad frisbees: who would have thought?
Society collapsing: I’m still trying to tie up the two halves of the study: analyzing the inequalities in the distribution of wealth or scientific citations by comparing them with a statistical model of mechanical failure of hard materials.
Regenerative braking: slowing down using regenerative brakes is a bit more efficient than just coasting withoug motor nor brakes, as the inefficiency in generating electricity from motion is less than that associated with air friction at a slowlier decreasing speed.
Lagrangian relations and linear billiards
Falling cats:
Gauge theory of the falling cat
Cats, parking and polarization
Pendula:
Anharmonic oscillator and renormalization
Perturbation of a classical oscillator
Wilberforce’s pendulum: cool way to couple harmonic oscillators.
Resonance curves are perfect circles
Rotating bodies:
Beyond the Poinsot construction
Inertial imaging: when even a small protein sticks to a small vibrator it changes the way it oscillates, and analyzing the sensor’s moments of inertia can yield mass measurement of up to single molecules.
Geometric phase of sleeping tops
Particles
Quantum
Magic squares: Latin, Semiclassical and Quantum: “Magical” combinations of quantum measurements
Event horizons are tunable factories of entanglement: Maybe this can be analogued to further investigate Hawking radiation
Testing the discreteness of time: Based on gravity-mediated entanglement.
Algebraic theory of spin: Non-relativistic spins by real algebraic methods without the use of: complex numbers; manifolds; calculus; spinors; explicit matrix representa- tions; quantum mechanical notions such as states or probabilities; or dynamical notions such as angular momentum, energy, or time.
Extensions of the harmonic oscillator
Ladder operators for infinite potential well
A classical analog for the electron spin state
Prime number quantum potential
Entanglement between superconducting qubits and a tardigrade
Non-normalizable harmonic oscillator
Topological classication of entanglement
Bootstrap method in harmonic oscillator
A Concrete Example of Fractional Chern Insulator:
Spectral walls in antikink-kink scattering in the phi^6 model:
Statistical Mechanics
Drip paintings and fractal analysis:
Phononic skyrmions: When I thought I heard them all…
Nineteen vortex equations: A kind of solitons.
Integrable crosscap states in gl(N) spin chains: So many questions…
Stability, dissipation and causality: The requirement of causality can shave off a lot of field theories.
Visualizing many-body wave-functions
Before thy throne I slip in gently, hoping nobody will notice: A memorial to Robin Hudson: Quantum stochastic calculus?
Thermodynamics
Atmospheric water vapor condensation on engineered interfaces: Busting the myths: “Will lead to the design of efficient atmospheric water harvesting systems”.
Leidenfrost oscillations and youtube video
Climate impact of particle physics
Water
Singularity formation in the incompressible Euler equation in finite and infinite time: Navier-Stokes debunked?
Ocean-depth using shallow-water
Generalized Archimedes Principle
How Giving Me Telescope Time Can Reduce Drought
Gauge theory for shallow water: Shallow water waves can be modeled as a Chern-Simons gauge theory with two Abelian gauge fields corresponding to conserved height and vorticity of the fluid, recovering Poincaré and Kelvin waves.
Applications
Nanoparticled concrete for radiative cooling applications:
Identifying Damage-Sensitive Spatial Vibration Characteristics of Bridges from Widespread Smartphone Data: Next frontier of cookie collection.
Following the information footprint of firms:
Elastic Spin and Orbital Angular Momenta: Maybe explains Cacciatori’s classical spin.
Directed Acoustic Assembly in 3D:
Molecular filtration by reduced graphene oxide sandwiched between wood sheets: A promising water filter.
Faster and safer evacuations induced by closed vestibules: The density of people evacuating can be finely controlled by the shape of a vestibule (a room before the exit) and this can double the evacuation flow.
A magnetic eye tracker: Stick a permanent magnet in the patient’s eye to detect his gaze.
Liquid identification by Hilbert Spectroscopy
Transport of nanoparticles through masks
Photophoretically levitating sensors
A Lunar backup for humanity: r/datahoarders rise up.
Biology
Volleyball dynamics: Closed-form distribution of number of hits in a “rally”.
Chemistry
Representations of macromolecules
Analogue stuff
Symplectic circuits, entanglement, and stimulated Hawking radiation in analog gravity: !
Non-abelian gauge fields in circuit systems: Analogue Aharanov-Bohm effects and so on.
Black-holes in traffic: thick fog can warp the spacetime of brake lights and eventually create black holes.
Physics of the Inverted Harmonic Oscillator: Hawking-Unruh effect?
Analogue Black Holes in Reactive Molecules: Yeah…
Hunting Quantum Gravity with Analogs: the case of graphene:
Optics
Sound Waveguiding by Spinning: An Avenue towards Unidirectional Acoustic Spinning Fibers:
Harvesting Planck radiation for free-space optical communications in the LWIR band:
Double Fourier integrals: Powerful residue integration techniques with applications to diffraction theory. I’m curious about the “bridge and arrow notation”.
Computing
Emergent spacetime from purely random structures: Wolfram-like study of physics on big random graphs
Cadabra and Python algorithms for general relativity: Seems like they can represent vielbeins, could be useful.
Simulating physics with computers
Magnonic circuits: boson quasiparticle NAS.
Intros and notes
Notes on Legendre polynomials:
Intro to quantum cosmology: Hopefully more consistent than quantum gravity.
Intro to topological defects: Sounds fun, very topological
Fractional statistics: Intro to anyons.
Witten’s introduction to causality
Introduction to monstrous moonshine
Lectures on optical waveguides
Geometric Quantization: Particles, Fields and Strings
Grassmann Calculus, Pseudoclassical Mechanics and Geometric Algebra
Maths
Algebraic Geometry
Analysis
Homotopy analysis method: A novel method for exact solutions of complicated differential equations.
From asymptotic to closed forms for the Keiper/Li approach to the Riemann Hypothesis: Mentions the WKB expansion and the quartic oscillator…
Equivalent complete norms and positivity
Probability
Methods of free probability: Intro to a new formalism.
Category Theory
The Many Lives of Lattice Theory
Game theory and scholarly publishing
Geometry
Curvature and quantized Arnold strangeness: Wish I had the original article…
Constant astigmatism equation:
Is time the real line?: They claim spacetime is not Hausdorff.
Differential geometry of music perception, update:
Differential Geometry of Music Perception
Graphical Calculus for products and convolutions
Configuration spaces of hard spheres
Mathph
A Panorama Of Physical Mathematics c. 2022: The point of the situation
Feynman checkers: number-theoretic properties: Interesting meet of Young diagrams and random walks.
The SU(2) Lie-Poisson Algebra and its Descendants:
Zeta regularization and the Casimir effect
Growth of the Mertens Function and the Riemann Hypothesis
Spectra
The sound of symmetry: notes on the developement of Kac’s “Can you hear the shape of a drum?”.