Beyond the Standard Models Forum

Post thread
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.
High School Are Tachyons Real or Just a Theoretical Concept Compared to Photons?
  • agentundercover99
  • · Replies 7 ·
Replies
7
Undergrad Is M-theory (a) self-consistent (b) externally consistent?
  • nomadreid
  • · Replies 8 ·
Replies
8
Graduate Exceptional Quantum Geometry and Particle Physics
  • jeffery_winkler
  • · Replies 7 ·
Replies
7
Graduate QGravity, masses and CKM matrix all for free
  • arivero
  • · Replies 3 ·
Replies
3
Graduate Merging Gravity with the other forces
  • VictorMedvil
  • · Replies 42 ·
2
Replies
42
Graduate Which Graduate Program Explores String Theory and Loop Quantum Gravity?
  • Vahsek
  • · Replies 1 ·
Replies
1
Graduate Is Physics Truly Scale-Dependent and How Does Decoupling Occur?
  • samalkhaiat
  • · Replies 1 ·
Replies
1
Graduate What physical systems exhibit nonseparable Hamiltonians in classical mechanics?
  • Q_Goest
  • · Replies 1 ·
Replies
1
Undergrad What percentage of physicists believe in a simulation hypothesis?
  • Johnny5454
  • · Replies 4 ·
Replies
4
Graduate Standard Model and number of fundamental forces
  • s00mb
  • · Replies 3 ·
Replies
3
Undergrad What happened to Susskind's Quantum Field Theory lectures at Stanford?
  • hyksos
  • · Replies 1 ·
Replies
1
Undergrad Laplace's equation vs Principle of Least Action?
  • Newton-reborn
  • · Replies 2 ·
Replies
2
Graduate Explaining the Hubble tension with fundamental physics
  • mitchell porter
  • · Replies 6 ·
Replies
6
Undergrad New force of nature discovered?
  • member 342489
  • · Replies 18 ·
Replies
18
Undergrad What does it mean to say space and time are fundamental in physics?
  • Newton-reborn
  • · Replies 7 ·
Replies
7
High School Gravitational wave emission from electrons
  • HibyPrime
  • · Replies 6 ·
Replies
6
Undergrad Are physical constants 'constant' axiomatically, or is there a theory?
  • cmb
  • · Replies 6 ·
Replies
6
Graduate Donoghue's critique of asymptotic safety
  • mitchell porter
  • · Replies 1 ·
Replies
1
High School Einstein summation notation, ambiguity?
  • Hiero
  • · Replies 3 ·
Replies
3
Undergrad Tom Banks' New Paper - Contra Eternal Inflation
  • ChromaCorrect
  • · Replies 4 ·
Replies
4
High School Twistor Theory: Evaluating Its Relevance in Modern Unification Theories
  • warhammer
  • · Replies 2 ·
Replies
2
Graduate Lagrangian to the Euler-Lagrange equation
  • Trying2Learn
  • · Replies 1 ·
Replies
1
Undergrad Problem of time in quantum field theory?
  • TomServo
  • · Replies 37 ·
2
Replies
37
Undergrad Are there any linear quantum gravity theories?
  • Nickyv2423
  • · Replies 15 ·
Replies
15
Undergrad Is Gravity a Force or Just Curved Spacetime?
  • KevinMcHugh
  • · Replies 19 ·
Replies
19
High School Lost in Math - Sabine Hossenfelder
  • BWV
  • · Replies 4 ·
Replies
4
High School A Question about space and the multiverse
  • Quantum Alchemy
  • · Replies 9 ·
Replies
9
Undergrad Eigenvalue Problem -- Justification
  • Trying2Learn
  • · Replies 11 ·
Replies
11
High School Manipulating quantities with natural units
  • etotheipi
  • · Replies 2 ·
Replies
2
Graduate New BSM Theory: Investigating Claims
  • AdamS
  • · Replies 3 ·
Replies
3
Undergrad Is Gravity Part Of The Standard Model?
  • bhobba
  • · Replies 30 ·
2
Replies
30
Undergrad Is SUSY still a possibility with current EDM limits and energy constraints?
  • kelly0303
  • · Replies 3 ·
Replies
3
Undergrad How to make something independent of the coordinate frame?
  • glmhd
  • · Replies 1 ·
Replies
1
High School Does d'Alembert Principle Hold Without External Forces in a Galactic Frame?
  • MPavsic
  • · Replies 1 ·
Replies
1
Undergrad What Unsolved Mysteries in Physics Lack a Theoretical Explanation?
  • kelly0303
  • · Replies 40 ·
2
Replies
40
Graduate Scientists are searching for a mirror universe....
  • Marilyn67
  • · Replies 7 ·
Replies
7
High School Testing the No-Hair Theorem with GW150914
  • member 656954
  • · Replies 3 ·
Replies
3
High School Why are Boltzmann Brains considered a problem for physics?
  • TheQuestionGuy14
  • · Replies 1 ·
Replies
1
Undergrad Conflict of domain and endpoints in Noether's theorem
  • Van Ladmon
  • · Replies 3 ·
Replies
3
Undergrad The new definition of kg and the mass-energy equivalence
  • FranzDiCoccio
  • · Replies 4 ·
Replies
4
Undergrad Simulation Hypothesis: How Will Touch Occur?
  • John2000
  • · Replies 11 ·
Replies
11
Graduate Towards formulating an invariant Lagrangian
  • Safinaz
  • · Replies 1 ·
Replies
1
Graduate Could this unified theory be correct?
  • carl_sebastian
  • · Replies 15 ·
Replies
15
Graduate Understanding Membrane Theory: Main Concepts & Beautiful GI Results
  • PGaccount
  • · Replies 2 ·
Replies
2
Undergrad Condition for delta operator and total time differential to commute
  • Abhishek11235
  • · Replies 1 ·
Replies
1
Graduate Did Paul Dirac believe in multiple universes?
  • Suekdccia
  • · Replies 1 ·
Replies
1
High School How a Lagrangian can represent a theory?
  • hugo_faurand
  • · Replies 4 ·
Replies
4
High School Exploring String Theory: Open and Closed Strings
  • PGaccount
  • · Replies 3 ·
Replies
3
Graduate Infinite-dimensional symmetry....
  • Nik_2213
  • · Replies 4 ·
Replies
4
Graduate Liouville's theorem and time evolution of ensemble average
  • Jeremy1986
  • · Replies 2 ·
Replies
2
Graduate Would Wheeler's oscillatory universe model create different laws?
  • Suekdccia
  • · Replies 2 ·
Replies
2
Undergrad Why don't strings have a Planck mass?
  • jcap
  • · Replies 7 ·
Replies
7
Graduate How to construct a spin-3/2 theory from the ground up
  • Maurice7510
  • · Replies 2 ·
Replies
2
Undergrad Eigenvectors of the EM stress-energy tensor
  • Creedence
  • · Replies 2 ·
Replies
2
Undergrad Covariant and contravariant tensors
  • dsaun777
  • · Replies 8 ·
Replies
8
Graduate How to Calculate Arc Length of a Helical Path on a Torus?
  • BasicWill
  • · Replies 1 ·
Replies
1
Graduate Is the Randall-Sundrum model background independent?
  • Suekdccia
  • · Replies 5 ·
Replies
5
Undergrad Theoretical Torricelli Vacuum Test: Impurity Impact on Pressure
  • hubajs
  • · Replies 18 ·
Replies
18
Graduate Unknown mathematical methods in Physics?
  • Pi-is-3
  • · Replies 5 ·
Replies
5
Graduate Getting structure data from a partition function?
  • maajdl
  • · Replies 1 ·
Replies
1
Graduate Is Seth Lloyd's cosmological model background independent?
  • Suekdccia
  • · Replies 5 ·
Replies
5
Undergrad 'Formulations' of Physical Theories: Overview?
  • Logic Cloud
  • · Replies 2 ·
Replies
2
Undergrad Strange formulation of Gauss' Theorem
  • Ssnow
  • · Replies 3 ·
Replies
3
High School Strong nuclei force and extra dimensions
  • GTOM
  • · Replies 1 ·
Replies
1
Graduate Developments to unify quantum theory with General Relativity?
  • mathman
  • · Replies 7 ·
Replies
7
Graduate Geometry of Classical Physics in terms of Gauge Theory geometry?
  • jordi
  • · Replies 2 ·
Replies
2
Undergrad What multiverse model is this author referring to?
  • Suekdccia
  • · Replies 7 ·
Replies
7
High School Energy as a non relativistic scalar and Galilean invariance
  • roineust
  • · Replies 7 ·
Replies
7
Undergrad Is spacetime emergent - and in which theories?
  • S Beck
  • · Replies 48 ·
2
Replies
48
Undergrad Are all Cellular Automata models of universes?
  • Suekdccia
  • · Replies 11 ·
Replies
11
High School Is string theory dead or still valid
  • potato123
  • · Replies 55 ·
2
Replies
55
Graduate Question about Euler’s Equations when Auxiliary Conditions are Imposed
  • sams
  • · Replies 1 ·
Replies
1
Graduate Which is the quantized variable in quantum gravity?
  • jordi
  • · Replies 1 ·
Replies
1
Graduate Were there any valid classical unified field theories ?
  • Rohan
  • · Replies 4 ·
Replies
4
Graduate Hints for lepton flavor violation in B-hadron decays
  • Dedu
  • · Replies 1 ·
Replies
1
Undergrad Is Time More Fundamental Than Space According to Smolin's Theories?
  • jlcd
  • · Replies 14 ·
Replies
14
Graduate How does this study affect the holographic principle?
  • Suekdccia
  • · Replies 1 ·
Replies
1
Undergrad Electrostatic interaction in the Simulation Hypothesis
  • Philipsmett
  • · Replies 6 ·
Replies
6
Undergrad Phase space density function and Probability density function
  • shahbaznihal
  • · Replies 2 ·
Replies
2
Undergrad How Does Quantum Gravity Influence Our Understanding of Quantum Mechanics?
  • A. Neumaier
  • · Replies 6 ·
Replies
6
High School Does dark matter travel faster than light?
  • DrK
  • · Replies 3 ·
Replies
3
Undergrad Missing exponent in "Theoretical Minimum"?
  • SamRoss
  • · Replies 4 ·
Replies
4
High School Can String Theory Be Tested and Solve Cosmic Mysteries?
  • Vamsi9955
  • · Replies 7 ·
Replies
7
Undergrad Theories and their domains of applicability?
  • hyksos
  • · Replies 16 ·
Replies
16
Graduate Approximate solutions to Kuramoto synchronization model
  • Danny Boy
  • · Replies 2 ·
Replies
2
Graduate Condensed matter physics, area laws & LQG?
  • atyy
  • · Replies 388 ·
13
Replies
388
Undergrad Derivative operators in Galilean transformations
  • TomServo
  • · Replies 5 ·
Replies
5
High School Are we past due to declare EM/Light/Waves its own dimension?
  • pittsburgh
  • · Replies 11 ·
Replies
11
Graduate Determinism: mathematical models
  • Auto-Didact
  • · Replies 9 ·
Replies
9
Graduate How is string theory related to MWI?
  • calvin
  • · Replies 3 ·
Replies
3
Graduate Is the Higgs Field Key to Understanding Gravity and Inertia?
  • kvantti
  • · Replies 1 ·
Replies
1
Graduate LHC and SUSY Aug 2010 results, implications for string theory
  • ensabah6
  • · Replies 1 ·
Replies
1
Graduate Detecting large extra dimensions via mini black holes ?
  • Coin
  • · Replies 1 ·
Replies
1
Undergrad Lorenz gauge, derivative of field tensor
  • Lapidus
  • · Replies 1 ·
Replies
1
Undergrad Can Axioms Revolutionize Our Understanding of Physics?
  • Yaya
  • · Replies 8 ·
Replies
8
Graduate Froggatt & Nielsen: top-Higgs blobs explain everything
  • mitchell porter
  • · Replies 6 ·
Replies
6
High School How physics equations transform under inverse of parameters
  • JustTryingToLearn
  • · Replies 6 ·
Replies
6
High School Sabine Hossenfelder and Beauty in Physics
  • jedishrfu
  • · Replies 82 ·
3
Replies
82
Graduate What is the Fundamental Nature of Location in Physics?
  • Simons
  • · Replies 1 ·
Replies
1
Graduate Has Sir Michael Atiyah Uncovered New Links Between Arithmetic and Physics?
  • mitchell porter
  • · Replies 41 ·
2
Replies
41