Join expert and advanced topics on beyond the standard model of physics. This includes professionally researched theories like strings, branes, and LQG. Mainstream physics only.
Threads
High School What is currently known about fields other than gravitation?
- mister i
- · Replies 11 ·
Undergrad Gravitation In Higher Dimensions
- Hornbein
- · Replies 2 ·
Graduate Majorana mass term for the electron
- zaman786
- · Replies 16 ·
High School Vibration Patterns of Strings within Quarks?
- Hatem
- · Replies 1 ·
Undergrad Why are nontrivial loops unavoidable in mathematical models of classical 3D rotations?
- DanCoimbra
- · Replies 6 ·
Graduate Generalizing Einstein field equations for von Neumann W* algebras with fractal dimensions
- Tommolo
- · Replies 20 ·
High School String theory suggests that dark matter is hiding in extra dimension
- pines-demon
- · Replies 10 ·
Graduate Tully-Fisher law from modified Kepler symmetries
- mitchell porter
- · Replies 11 ·
Undergrad Observation of structures at ∼17 and ∼38 MeV/c2 in the γγ invariant mass spectra
- kodama
- · Replies 10 ·
Graduate Does attraction vs repulsion depend on graviton spin?
- Heidi
- · Replies 15 ·
Graduate The no boundary proposal and quantum gravity
- Morbert
- · Replies 7 ·
Undergrad Does the graviton have to exist?
- Jim Kata
- · Replies 6 ·
Graduate Chae Binaries Paper Published + Rebuttal of Banik + OSMU Talk
- strangerep
- · Replies 18 ·
Graduate Does the Universe have a finite number of fundamentals to uncover?
- Maximum7
- · Replies 9 ·
Graduate Has this experiment of "detecting" the quantum foam been conducted?
- DyerMaker
- · Replies 5 ·
Undergrad How did Hamilton derive the characteristic function V in his essay?
- selim
- · Replies 3 ·
Undergrad Is the Near Integer Muon to Electron Mass Ratio a Coincidence or Significant?
- Jonathan Scott
- · Replies 7 ·
Graduate Is Doubly Special Relativity Connected to Variable Light Speed?
- jjzeidner
- · Replies 14 ·
Undergrad Taylor expansion about lagrangian in noether
- gionole
- · Replies 1 ·
Undergrad Do scientific measurements need real numbers or just rationals?
- Dale
- · Replies 85 ·
Undergrad Integrity of matter / space and time
- tuneksan
- · Replies 13 ·
Undergrad Sign of the spatial part of the J.J interaction
- gernos
- · Replies 0 ·
Undergrad Mond - gravity as two separate forces?
- Fred Blame
- · Replies 12 ·
Graduate Milgrom's constant and challenges to dark matter
- strangerep
- · Replies 12 ·
Undergrad Atmospheric Density vs Altitude in an O'Neil Cylinder
- MattRob
- · Replies 1 ·
Graduate Can the Strand Tangle Model Unify General Relativity and the Standard Model?
- physics8553
- · Replies 5 ·
Undergrad Are non-perturbative methods in physics limited to quantum physics?
- ohwilleke
- · Replies 4 ·
Undergrad Active transformation use-case in homogeneity
- gionole
- · Replies 13 ·
Graduate How was this infinite sequence of numbers found? (non-commutative geometry )
- Heidi
- · Replies 4 ·
Undergrad Restoring S.I. units to a Lagrangian in natural units
- Precious Adegbite
- · Replies 1 ·
Undergrad Is loop quantum gravity dual to CFT?
- kodama
- · Replies 13 ·
Undergrad Transformations for isotropy in terms of math
- gionole
- · Replies 1 ·
Undergrad Coordinate transformation for isotropy
- gionole
- · Replies 7 ·
Undergrad About the use of nominal definitions in physics
- cianfa72
- · Replies 28 ·
Graduate Are there any theorems restricting possible QG candidates?
- Kontilera
- · Replies 1 ·
Undergrad Three questions regarding QG theories
- Kontilera
- · Replies 12 ·
Graduate Dark Matter as Superfluid (Khoury)
- haushofer
- · Replies 8 ·
Undergrad Questions about deriving generic equations/laws from specific equations/laws
- Hallucinogen
- · Replies 0 ·
Undergrad Existential problem on Electromagnetism and the combination of Relativity and Quantum Mechanics
- Hak
- · Replies 8 ·
Graduate Lagrangian: kinetic matrix Z_ij and mass matrix k_ij
- GGGGc
- · Replies 1 ·
Undergrad Looking for a unified expression for energy in rotating systems
- GeneralJez
- · Replies 1 ·
High School Proof of the relation between antenna aperture and gain
- alan123hk
- · Replies 14 ·
Undergrad PADME latest Oct 2, 2023 paper, searching for X17 particle
- kodama
- · Replies 11 ·
Graduate Upper indices and lower indices in Einstein notation
- GGGGc
- · Replies 5 ·
Undergrad Questions about submitting papers for peer review
- Enos
- · Replies 32 ·
Graduate Inquiry Regarding Concept in Time and Celestial Motion
- RBP3
- · Replies 2 ·
Undergrad What if unification does not work?
- Randy Subers
- · Replies 28 ·
High School Prediction of McGaugh verified?
- Structure seeker
- · Replies 1 ·
Graduate "Monstrous Higgs and Leech Spacetime"
- mitchell porter
- · Replies 0 ·
Undergrad What is the distinction between invariance and covariance?
- QuarkMaster
- · Replies 10 ·
Graduate Is it possible to obtain excess energy from a Townsend discharge?
- environes
- · Replies 6 ·
Undergrad Alternatives to the Lagrangian?
- Feynstein100
- · Replies 17 ·
Undergrad Open problems in nonlinear dynamics and Chaos
- V9999
- · Replies 1 ·
High School Why doesn't Euler's formula directly give numerical values for cos and sin?
- jaydnul
- · Replies 3 ·
High School Balancing theories and empirical data, especially concerning string theory
- jaketodd
- · Replies 47 ·
Undergrad What is the Limiting Mass at the Final Stages of Black Hole Evaporation?
- dsaun777
- · Replies 9 ·
Undergrad New Preprint on Wide Binaries Supports MOND
- ohwilleke
- · Replies 14 ·
Undergrad Lagrangian total time derivative for the velocity
- gionole
- · Replies 21 ·
Undergrad Landau's inertial frame logic
- gionole
- · Replies 1 ·
Undergrad Requirement of Holonomic Constraints for Deriving Lagrange Equations
- deuteron
- · Replies 1 ·
High School Time travel via many-worlds interpretation and universe branching
- Physics_is_beautiful
- · Replies 8 ·
Graduate Can a single constraint on three fields generate infinitely many gauge transformations?
- Baela
- · Replies 12 ·
Undergrad Having trouble understanding Tensor Contraction
- paperplane
- · Replies 14 ·
Undergrad How experimentally robust is Giant Dipole Resonance in 88Be?
- kodama
- · Replies 4 ·
Graduate F.E.M and Hamilton's Principle (converting differential equations into integral equations)
- Trying2Learn
- · Replies 1 ·
Undergrad All possible QFTs from geometry?
- Suekdccia
- · Replies 3 ·
High School What are complex numbers good for?
- lukephysics
- · Replies 13 ·
Undergrad Lagrangian doesn't change when adding total time derivative
- gionole
- · Replies 19 ·
Graduate Vector spherical harmonics in multipole expansion of vector potential
- kelly0303
- · Replies 4 ·
Graduate If the solution of a field vanishes on-shell does it mean anything?
- Baela
- · Replies 1 ·
Undergrad Does the Hamilton-Jacobi equation exist for chaotic systems?
- andresB
- · Replies 4 ·
Graduate Can position and velocity vary independently in Hamilton's Principle?
- Trying2Learn
- · Replies 2 ·
Undergrad How Does Landau Justify the Additivity of Lagrangians in Isolated Systems?
- gionole
- · Replies 9 ·
Undergrad Status and Prospects of PADME Run 3
- kodama
- · Replies 10 ·
Undergrad Ads/CFT and Ashtekar variables or spinfoam
- kodama
- · Replies 7 ·
Undergrad Does mass conservation correspond to a pseudo-symmetry?
- Feynstein100
- · Replies 6 ·
Graduate Vavryčuk's conformal FLRW metric as an alternative to dark energy and dark matter
- member 673059
- · Replies 8 ·
Undergrad BRST quantization of Ashtekar variables
- kodama
- · Replies 6 ·
High School What is string theory and why was it developed?
- Physics_is_beautiful
- · Replies 10 ·
Graduate NANOGrav waves support string theory?
- apostolosdt
- · Replies 2 ·
Undergrad Can Inhomogeneities in the Higgs Field Accelerate Galaxy Formation?
- nnunn
- · Replies 11 ·
Graduate Can Non-Commutative Geometry Describe Gluons?
- casparov
- · Replies 42 ·
Graduate Thermodynamics/gravity/CFT correspondence
- Demystifier
- · Replies 8 ·
Undergrad What maps are considered in the Polyakov path integral?
- GeniVasc
- · Replies 0 ·
Graduate Modified Gravity against Dark Matter
- Floyd_13
- · Replies 5 ·
Graduate What does it mean when the eom of a field is trivially satisfied?
- Baela
- · Replies 4 ·
Undergrad Proving that the Lagrangian of a free particle is independent of q
- okaythanksbud
- · Replies 1 ·
Undergrad Can Superstring Theory Ever Be Refuted or Confirmed?
- Unique_Engineer
- · Replies 24 ·
Undergrad Deur Gravitational self-interaction Doesn't Explain Galaxy Rotation Curves
- kodama
- · Replies 72 ·
High School What Principles Govern the Emergence of Spacetime According to Renate Loll?
- atyy
- · Replies 2 ·
Undergrad Why isn't the Lagrangian invariant under ##\theta## rotations?
- PhysicsRock
- · Replies 5 ·
Graduate H-Theorem and Lagrange multipliers
- VVS2000
- · Replies 7 ·
Graduate Is the kinetic mixing gauge-invariant for non-Abelian gauge fields?
- Ramtin123
- · Replies 3 ·
Graduate Kahana and Kahana predicted Higgs mass, top mass in 1993
- mitchell porter
- · Replies 16 ·
Undergrad Why do dimensions curl up or expand?
- Trollfaz
- · Replies 5 ·
Graduate LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena
- ohwilleke
- · Replies 264 ·
Graduate Does MOND explain radial orbital motion but fail for vertical stellar oscillations?
- strangerep
- · Replies 4 ·
Undergrad Tensor Calculus (Einstein notation)
- paperplane
- · Replies 4 ·
Graduate Are equations of motion invariant under gauge transformations?
- Baela
- · Replies 3 ·
Undergrad Are fundamental symmetries emergent if global symmetries are absent?
- Suekdccia
- · Replies 6 ·