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
Undergrad Why is the Higgsino less massive than the Higgs boson?
- hyksos
- · Replies 4 ·
Undergrad Simple case of Gauss' law for gravity
- snoopies622
- · Replies 10 ·
High School Why don't photons prove tachyons exist?
- agentundercover99
- · Replies 7 ·
Undergrad Is M-theory (a) self-consistent (b) externally consistent?
- nomadreid
- · Replies 8 ·
Graduate Exceptional Quantum Geometry and Particle Physics
- jeffery_winkler
- · Replies 7 ·
Graduate QGravity, masses and CKM matrix all for free
- arivero
- · Replies 3 ·
Graduate Merging Gravity with the other forces
- VictorMedvil
- · Replies 42 ·
Graduate Graduate programs for studying string theory and loop quantum gravity
- Vahsek
- · Replies 1 ·
Graduate Is Physics Truly Scale-Dependent and How Does Decoupling Occur?
- samalkhaiat
- · Replies 1 ·
Graduate What physical systems exhibit nonseparable Hamiltonians in classical mechanics?
- Q_Goest
- · Replies 1 ·
Undergrad What percentage of physicists believe in a simulation hypothesis?
- Johnny5454
- · Replies 4 ·
Graduate Standard Model and number of fundamental forces
- s00mb
- · Replies 3 ·
Undergrad What happened to Susskind's Quantum Field Theory lectures at Stanford?
- hyksos
- · Replies 1 ·
Undergrad Laplace's equation vs Principle of Least Action?
- Newton-reborn
- · Replies 2 ·
Graduate Hubble tension and Vafa's string theory quintessence model
- mitchell porter
- · Replies 6 ·
Undergrad Claimed discovery of new force with 7.7 sigma significance
- member 342489
- · Replies 18 ·
Undergrad What does it mean to say space and time are fundamental in physics?
- Newton-reborn
- · Replies 7 ·
High School Gravitational wave emission from electrons
- HibyPrime
- · Replies 6 ·
Undergrad Are physical constants 'constant' axiomatically, or is there a theory?
- cmb
- · Replies 6 ·
Graduate Donoghue's critique of asymptotic safety
- mitchell porter
- · Replies 1 ·
High School Einstein summation notation, ambiguity?
- Hiero
- · Replies 3 ·
Undergrad Tom Banks' New Paper - Contra Eternal Inflation
- ChromaCorrect
- · Replies 4 ·
High School Twistor Theory: Evaluating Its Relevance in Modern Unification Theories
- warhammer
- · Replies 2 ·
Graduate Lagrangian to the Euler-Lagrange equation
- Trying2Learn
- · Replies 1 ·
Undergrad Problem of time in quantum field theory?
- TomServo
- · Replies 37 ·
Undergrad Are there any linear quantum gravity theories?
- Nickyv2423
- · Replies 15 ·
Undergrad Why describe gravity below the Planck length if spacetime curvature explains it
- KevinMcHugh
- · Replies 19 ·
High School Lost in Math - Sabine Hossenfelder
- BWV
- · Replies 4 ·
High School Evidence against Tegmark's Level 1 multiverse
- Quantum Alchemy
- · Replies 9 ·
Undergrad Eigenvalue Problem -- Justification
- Trying2Learn
- · Replies 11 ·
High School Manipulating quantities with natural units
- etotheipi
- · Replies 2 ·
Graduate Tan's beyond standard model theory with scalar field
- AdamS
- · Replies 3 ·
Undergrad Is Gravity Part Of The Standard Model?
- bhobba
- · Replies 30 ·
Undergrad Is SUSY still a possibility with current EDM limits and energy constraints?
- kelly0303
- · Replies 3 ·
Undergrad How to make something independent of the coordinate frame?
- glmhd
- · Replies 1 ·
High School Does d'Alembert Principle Hold Without External Forces in a Galactic Frame?
- MPavsic
- · Replies 1 ·
Undergrad Physical phenomena with observational evidence but no accepted theory
- kelly0303
- · Replies 40 ·
Graduate Neutron decay anomaly and mirror universe hypothesis
- Marilyn67
- · Replies 7 ·
High School Testing the No-Hair Theorem with GW150914
- member 656954
- · Replies 3 ·
High School Why are Boltzmann Brains considered a problem for physics?
- TheQuestionGuy14
- · Replies 1 ·
Undergrad Conflict of domain and endpoints in Noether's theorem
- Van Ladmon
- · Replies 3 ·
Undergrad The new definition of kg and the mass-energy equivalence
- FranzDiCoccio
- · Replies 4 ·
Undergrad Simulation Hypothesis: How Will Touch Occur?
- John2000
- · Replies 11 ·
Graduate Towards formulating an invariant Lagrangian
- Safinaz
- · Replies 1 ·
Graduate Could this unified theory be correct?
- carl_sebastian
- · Replies 15 ·
Graduate Does the g → 1/g transformation relate membrane theory to black hole evaporation?
- PGaccount
- · Replies 2 ·
Undergrad Condition for delta operator and total time differential to commute
- Abhishek11235
- · Replies 1 ·
Graduate Did Paul Dirac believe in multiple universes?
- Suekdccia
- · Replies 1 ·
High School How a Lagrangian can represent a theory?
- hugo_faurand
- · Replies 4 ·
High School Are open strings like world lines and closed strings like loops?
- PGaccount
- · Replies 3 ·
Graduate Infinite-dimensional symmetry in Meissner and Nicolai's gravity model
- Nik_2213
- · Replies 4 ·
Graduate Liouville's theorem and time evolution of ensemble average
- Jeremy1986
- · Replies 2 ·
Graduate Would Wheeler's oscillatory universe model create different laws?
- Suekdccia
- · Replies 2 ·
Undergrad Why don't strings have a Planck mass?
- jcap
- · Replies 7 ·
Graduate How to construct a spin-3/2 theory from the ground up
- Maurice7510
- · Replies 2 ·
Undergrad Eigenvectors of the EM stress-energy tensor
- Creedence
- · Replies 2 ·
Undergrad Why use covariant and contravariant tensors in physics
- dsaun777
- · Replies 8 ·
Graduate How to Calculate Arc Length of a Helical Path on a Torus?
- BasicWill
- · Replies 1 ·
Graduate Is the Randall-Sundrum model background independent?
- Suekdccia
- · Replies 5 ·
Undergrad Theoretical Torricelli Vacuum Test: Impurity Impact on Pressure
- hubajs
- · Replies 18 ·
Graduate Unknown mathematical methods in Physics?
- Pi-is-3
- · Replies 5 ·
Graduate Getting structure data from a partition function?
- maajdl
- · Replies 1 ·
Graduate Is Seth Lloyd's cosmological model background independent?
- Suekdccia
- · Replies 5 ·
Undergrad 'Formulations' of Physical Theories: Overview?
- Logic Cloud
- · Replies 2 ·
Undergrad Strange formulation of Gauss' Theorem
- Ssnow
- · Replies 3 ·
High School Strong nuclei force and extra dimensions
- GTOM
- · Replies 1 ·
Graduate Developments to unify quantum theory with General Relativity?
- mathman
- · Replies 7 ·
Graduate Geometry of Classical Physics in terms of Gauge Theory geometry?
- jordi
- · Replies 2 ·
Undergrad What multiverse model is this author referring to?
- Suekdccia
- · Replies 7 ·
High School Energy as a non relativistic scalar and Galilean invariance
- roineust
- · Replies 7 ·
Undergrad Is spacetime emergent - and in which theories?
- S Beck
- · Replies 48 ·
Undergrad Are all Cellular Automata models of universes?
- Suekdccia
- · Replies 11 ·
High School Is string theory dead or still valid
- potato123
- · Replies 55 ·
Graduate Deriving Euler equations with Lagrange multiplier from equation 6.67
- sams
- · Replies 1 ·
Graduate Which is the quantized variable in quantum gravity?
- jordi
- · Replies 1 ·
Graduate Were there any valid classical unified field theories ?
- Rohan
- · Replies 4 ·
Graduate Hints for lepton flavor violation in B-hadron decays
- Dedu
- · Replies 1 ·
Undergrad Is Time More Fundamental Than Space According to Smolin's Theories?
- jlcd
- · Replies 14 ·
Graduate How does this study affect the holographic principle?
- Suekdccia
- · Replies 1 ·
Undergrad Electrostatic interaction in the Simulation Hypothesis
- Philipsmett
- · Replies 6 ·
Undergrad Phase space density function and Probability density function
- shahbaznihal
- · Replies 2 ·
Undergrad Quantum gravity's influence on quantum mechanics
- A. Neumaier
- · Replies 6 ·
High School Does dark matter travel faster than light?
- DrK
- · Replies 3 ·
Undergrad Missing exponent in "Theoretical Minimum"?
- SamRoss
- · Replies 4 ·
High School How can string theory test and explain dark energy, dark matter, and black holes?
- Vamsi9955
- · Replies 7 ·
Undergrad Theories and their domains of applicability?
- hyksos
- · Replies 16 ·
Graduate Approximate solutions to Kuramoto synchronization model
- Danny Boy
- · Replies 2 ·
Graduate Tensor networks, area laws, and spin networks in LQG
- atyy
- · Replies 388 ·
Undergrad Derivative operators in Galilean transformations
- TomServo
- · Replies 5 ·
High School Are we past due to declare EM/Light/Waves its own dimension?
- pittsburgh
- · Replies 11 ·
Graduate Determinism: mathematical models
- Auto-Didact
- · Replies 9 ·
Graduate How is string theory related to MWI?
- calvin
- · Replies 3 ·
Graduate Can the Higgs field mediate gravitational interactions?
- kvantti
- · Replies 1 ·
Graduate LHC and SUSY Aug 2010 results, implications for string theory
- ensabah6
- · Replies 1 ·
Graduate Detecting large extra dimensions via mini black holes ?
- Coin
- · Replies 1 ·
Undergrad Lorenz gauge, derivative of field tensor
- Lapidus
- · Replies 1 ·
Undergrad Why hasn't physics adopted an axiom-based approach like mathematics?
- Yaya
- · Replies 8 ·
Graduate Nonperturbative top-Higgs effects and lepton universality violations
- mitchell porter
- · Replies 6 ·
High School How physics equations transform under inverse of parameters
- JustTryingToLearn
- · Replies 6 ·
High School Sabine Hossenfelder and Beauty in Physics
- jedishrfu
- · Replies 82 ·