Beyond the Standard Models Forum

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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.
Undergrad Deriving Geodesic Equation from Lagrangian
  • acegikmoqsuwy
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Undergrad Masses of Fermions, string theory, Higgs mechanism
  • Spinnor
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Graduate What exactly is the string theory landscape?
  • ad infinitum
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Graduate Question about the associahedron/amplituhedron
  • nrqed
  • · Replies 5 ·
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Undergrad Implications of Nishida's mass/CKM observation
  • nikkkom
  • · Replies 4 ·
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4
Graduate Swampland Conjecture: Explained, Implications & Incompatibility
  • Demystifier
  • · Replies 14 ·
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Undergrad Time reversal symmetry in physics
  • som
  • · Replies 11 ·
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Graduate Difference between configuration space and phase space
  • sams
  • · Replies 1 ·
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High School Justification for emergent anything
  • Buckethead
  • · Replies 7 ·
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7
High School Is string theory a deterministic hidden variable theory?
  • Aidyan
  • · Replies 22 ·
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High School Help with a string theory equation
  • Akshaya dhakal
  • · Replies 6 ·
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6
Undergrad Is Non-Commutative Geometry the Key to a Discrete Model of Spacetime?
  • waves and change
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Undergrad Derivation of the Euler-Lagrangian
  • redtree
  • · Replies 12 ·
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12
Graduate Has Theoretical Physics met a bit of a roadblock?
  • Lunct
  • · Replies 31 ·
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High School Simple thought experiment merging GR and QT
  • SlowThinker
  • · Replies 16 ·
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Graduate Emergent Property: Usefulness in Physics
  • Twodogs
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High School Graphene Spinning Speed: Theoretical Max RPM of 1m Radius
  • Idont Know
  • · Replies 3 ·
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3
Graduate Is AdS/CFT Theory a Viable Option for Post-Graduate Research in HEP?
  • CharlieCW
  • · Replies 3 ·
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3
Undergrad Speed limit c in the multiverse
  • Spinnor
  • · Replies 6 ·
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6
Undergrad Gauss' law applied on a four-dimensional surface
  • helpmepleaseaaaaaaa
  • · Replies 1 ·
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Undergrad Cyclic variables for Hamiltonian
  • digogalvao
  • · Replies 5 ·
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5
High School Was the Big Bang a quantum mechanical vacuum fluctuation?
  • mark!
  • · Replies 85 ·
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Undergrad Translational Symmetry: Effects on Laws & World
  • Robin04
  • · Replies 8 ·
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8
High School Symmetry in Nature: Is Physical Nature Symmetrical?
  • entropy1
  • · Replies 1 ·
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Undergrad Does Physics Allow for a Time Component in Vector Quantities?
  • Delta2
  • · Replies 6 ·
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6
Undergrad Why are the laws of physics what they are?
  • ScientificMind
  • · Replies 12 ·
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12
Graduate Error in Mathematical Methods for Physicist by Arfken, et al
  • jinjung
  • · Replies 4 ·
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4
High School What Are the Key Questions Surrounding SU(3)xSU(2)xU(1) Symmetry Groups?
  • cube137
  • · Replies 52 ·
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Graduate Furey models with Division Algebras
  • arivero
  • · Replies 19 ·
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High School Reconciling QM with string theory
  • Sophrosyne
  • · Replies 6 ·
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6
Undergrad Tensor Equations: Invariance Across Different Reference Frames?
  • e2m2a
  • · Replies 4 ·
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4
Undergrad Are Mass, Volume, and MOI Enough to Determine Dimensional Identity?
  • Randy Cotteleer
  • · Replies 17 ·
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Undergrad Derivative of a Variation vs Variation of a Derivative
  • quickAndLucky
  • · Replies 4 ·
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4
Undergrad Is Energy Fundamental or Derived?
  • LAP3141
  • · Replies 15 ·
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15
High School A quick theoretical question on dark matter
  • BadgerBadger92
  • · Replies 4 ·
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Undergrad What does the total time derivative of a function signify in Noether's Theorem?
  • Higgsono
  • · Replies 2 ·
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Undergrad What are the Priority Tasks for High Energy Physics Beyond the Standard Model?
  • ohwilleke
  • · Replies 1 ·
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Graduate Negative cosmological constant from string theory
  • Demystifier
  • · Replies 9 ·
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9
Undergrad Help required regarding deriving E-L equations for EM
  • grzz
  • · Replies 9 ·
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9
Undergrad Emmy Noether's Theorem: Learning STEM for Beginners
  • gibberingmouther
  • · Replies 6 ·
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6
Graduate Summing not over configurations, but over theories
  • jordi
  • · Replies 15 ·
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Graduate Partial Differentiation in Lagrange's Equations
  • sams
  • · Replies 7 ·
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Undergrad Liouville equation with Dirac delta as probability density
  • andresB
  • · Replies 3 ·
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Graduate What is the role of homotopy super Lie-n algebras in M-theory?
  • mitchell porter
  • · Replies 6 ·
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Graduate Matrix coordinates of D branes
  • EternalStudent
  • · Replies 4 ·
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Graduate Canonical transformation - derviation problem
  • Vicol
  • · Replies 3 ·
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3
Graduate Muller's 'Now and the Flow of Time' - what's up?
  • asimov42
  • · Replies 5 ·
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Graduate Information encoding in the Holographic principle
  • Suekdccia
  • · Replies 14 ·
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14
Undergrad Physical Interpretation of Compactified Dimensions?
  • Islam Hassan
  • · Replies 1 ·
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Graduate Do some vacua in superstring theory reproduce the SM?
  • nrqed
  • · Replies 8 ·
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8
Undergrad Can one get E=mc^2 using classical EM theory?
  • snoopies622
  • · Replies 4 ·
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Graduate Asymptotic Safety for Quantum Gravity
  • stevendaryl
  • · Replies 2 ·
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Graduate Why Haven't We Observed Heavy Particles from Massive String Theory in Real Life?
  • EternalStudent
  • · Replies 12 ·
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Graduate Consequences of unifying Gravity with the other forces?
  • Ghost117
  • · Replies 3 ·
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3
Undergrad Is the Action Always a Minimum in the Principle of Least Action?
  • BookWei
  • · Replies 3 ·
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Undergrad Deterministic chaos and randomness
  • Giulio Prisco
  • · Replies 8 ·
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Undergrad Are these models true or even relevant?
  • FzKl
  • · Replies 9 ·
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Undergrad Line element from Kaluza-Klein for Kids
  • Spinnor
  • · Replies 14 ·
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Undergrad Transition between energy and mass
  • Robin04
  • · Replies 13 ·
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13
Undergrad What false hints of new physics were most notable?
  • ohwilleke
  • · Replies 30 ·
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Undergrad Connes' non-commutative geometry: useful or just an exercise?
  • nomadreid
  • · Replies 3 ·
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Undergrad Can Two Different Physical Theories Yield the Same Predictions?
  • Robin04
  • · Replies 2 ·
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Undergrad Strassler Hidden Valleys Viable?
  • jtlz
  • · Replies 10 ·
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10
Undergrad How Does the LHC Influence Our Understanding of Subquarks and Preons?
  • Azurite
  • · Replies 1 ·
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Undergrad How can we transform a Lagrangian to obtain a new set of equations of motion?
  • arpon
  • · Replies 2 ·
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Undergrad Causal Fermion System and revival of Dirac Sea
  • jtlz
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Undergrad What Objects Can Exist in the Quantum Vacuum?
  • jtlz
  • · Replies 11 ·
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High School G11 Metric Tensor: What is it & How Does it Work?
  • Mathematicsresear
  • · Replies 2 ·
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Graduate Shaposhnikov and Hossenfelder, Higgs and MOND
  • mitchell porter
  • · Replies 9 ·
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High School Understanding Incompatible Scientific Theories for Scientists
  • Schfra
  • · Replies 5 ·
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Undergrad What is the best theory why our vacuum may be in the edge of metastability?
  • jtlz
  • · Replies 38 ·
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Undergrad Covariance & Contravariance of Vectors
  • som
  • · Replies 20 ·
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20
Undergrad Particle Desert and New Physics
  • jtlz
  • · Replies 4 ·
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4
Undergrad Horava Lifschitz theory and Lorentz Invariance
  • windy miller
  • · Replies 5 ·
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Graduate What makes a good physics theory
  • Silviu
  • · Replies 14 ·
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Undergrad Metastability of the Higgs field
  • ryan liberty
  • · Replies 3 ·
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Undergrad Freeman Dyson's 1972 paper "Missed Opportunities"
  • kith
  • · Replies 3 ·
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Undergrad Radioactive decay caused by WIMPS?
  • qbit
  • · Replies 8 ·
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8
Undergrad Are there classical theories of strong/weak interactions?
  • SothSogi
  • · Replies 3 ·
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Undergrad Gravity well model going through a sphere
  • ARMYnerdGuy
  • · Replies 1 ·
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High School Using the words "Formulate" "To imply" "Explain" in Physics
  • slow
  • · Replies 5 ·
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Undergrad Why the Lagrangian is the difference of energies?
  • MichPod
  • · Replies 5 ·
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5
Undergrad What Must Abstract Conductors Be Made Of?
  • FS98
  • · Replies 15 ·
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Undergrad Other ways to break the Higgs symmetry group
  • jtlz
  • · Replies 16 ·
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16
Undergrad Proton Decay At The Highest Possible Energies
  • ohwilleke
  • · Replies 5 ·
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5
Undergrad Relation between statistics and theoretical physics
  • Jianphys17
  • · Replies 7 ·
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7
Undergrad What physics does this BVP represent?
  • member 428835
  • · Replies 13 ·
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13
High School Constrains in E8xE8 heterotic superstring theory
  • bluecap
  • · Replies 18 ·
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18
Undergrad Vector and Scalar Tensor Invariance
  • e2m2a
  • · Replies 4 ·
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4
High School The values of the fundamental constants
  • slow
  • · Replies 12 ·
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12
Graduate Electron charge vs quark charge
  • Ratman101
  • · Replies 9 ·
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9
Undergrad Vector potential A_mu from scalar function theta(x_mu)?
  • Spinnor
  • · Replies 2 ·
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2
Graduate Meaning of phase transitions in lattice gauge theories
  • diegzumillo
  • · Replies 3 ·
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3
Undergrad Uncovering the Mystery Behind SM Lagrangian Sums
  • jouvelot
  • · Replies 10 ·
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10
High School Quark confinement and the Higgs mechanism
  • bluecap
  • · Replies 31 ·
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Graduate The Forgotten Anniversary: 100 Years since Emmy Noether's Theorems
  • fresh_42
  • · Replies 25 ·
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High School Is Super Symmetry Dead? | Forbes
  • wolram
  • · Replies 68 ·
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Undergrad Can String Theory Explain the Energy Density of Empty Space?
  • Spinnor
  • · Replies 20 ·
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20
Undergrad How Are Base Vectors Defined in Covariance and Contravariance?
  • Somali_Physicist
  • · Replies 4 ·
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4
High School String theory, Calabi–Yau manifolds, complex dimensions
  • Spinnor
  • · Replies 25 ·
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25