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.
Graduate Finally, Garrett's model with 3 generations
  • MTd2
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Graduate In big bounce models, what drives the contracting phase?
  • mykamakiri
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Graduate What progress has been done on Hilbert's 6th problem?
  • Anama Skout
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Graduate Black hole fireworks: quantum-gravity effects outside the horizon spar
  • julcab12
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Graduate How Do Techni-Baryons Transform in SU(N_{TF}) and SU(2)_{spin} Symmetries?
  • Andrea M.
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Graduate I've heard that mass loses energy, but how?
  • 1832vin
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Graduate Finding Min. Potential Energy: Variation Calculus Method
  • Gayle
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Graduate Do All Automorphisms in Physics Imply Symmetries in Equations?
  • Garrulo
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Graduate How are leaps justified in Physics?
  • HermitOfThebes
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Graduate How to determine correct Lagrangian?
  • better361
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Graduate Something like category theory but for physics
  • Geofleur
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  • Poll Poll
Graduate Our picks for second quarter 2015 MIP (most important QG paper)
  • marcus
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Graduate Why is stress tensor (in this derivation) symmetric?
  • genxium
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Graduate The Bekenstein bound : Area versus Volume
  • RayLouvreur
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Graduate Would asymptomatic safe gravity grow weaker like QCD?
  • kodama
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Graduate Mureika-Stojkovic and beyond m
  • Javaxcore
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Graduate R-parity and conservation of angular momentum
  • Ken41
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Graduate Is the closed string an unknot?
  • Master replies:
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High School Can someone explain string theory?
  • Armando Valle
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Graduate SO(32) heterotic String theory
  • Master replies:
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What is the BtSM Conference Schedule?
  • Doc Al
  • · Replies 84 ·
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Graduate E8 theory according to the dark matter and energy
  • DaniV
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  • Poll Poll
Graduate POLL: How do you think of the Hubble rate?
  • marcus
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Graduate Classical/QFT Vacuum Fluctuations
  • HeavyWater
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Graduate T-Duality on Torus: Inverting Radii & Interchanging A- & B-Cycles
  • "pi"mp
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Insights Homotopy Lie-n Algebras in Supergravity - Comments
  • Urs Schreiber
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Graduate An interesting new paper on f(X) gravity
  • ohwilleke
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Graduate On a scale of 1 to String, how speculative is this?
  • BiGyElLoWhAt
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Graduate Is orbifolding of the torus a sophisticated spherification?
  • arivero
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Insights It Was 20 Years Ago Today -- the M-theory Conjecture - Comments
  • Urs Schreiber
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Graduate What would be the physics of a hypothetical gluon star?
  • kodama
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Graduate Equivalence of inertial and gravitational mass
  • Paulibus
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Graduate Curl of Gradient of a Scalar Field
  • Nishant Garg
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Graduate Dimensional Analysis of Planck Length
  • noahcharris
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Graduate PI video of new QG ideas from Eyo Ita, Chopin Soo, C-Y Chou
  • marcus
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Graduate A First Course in String Theory/Invariant Interval/Metric
  • Cosmology2015
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Undergrad Is Matter Really made of Matter?
  • Roy Smith
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Graduate Susskind on supersymmetry vs. cosmological constant?
  • haael
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Graduate Understanding 2D Tensors: Covariant, Contravariant, and Physical Components
  • Hrvoje Zoric
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Graduate In LQG, do objects attract via gravitons or curved spacetime
  • kodama
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Graduate Discussing Lee Smolin's Non-Local Beables: Quantum Physics Emergent from Gravity
  • Jimster41
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Graduate Huygens synchronization of two clocks
  • afcsimoes
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Graduate Z-bosons as Hawking radiation from BH
  • tzimie
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Graduate How Does Multiverse Theory Make *Every* Universe Possible?
  • noname2020x
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Graduate Scientific implications of latest LHC SUSY beauty quark
  • kodama
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Graduate Is spacetime a massless spin 2 field?
  • kodama
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Graduate Braids as a representation space of SU(5)
  • kodama
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Graduate Why would I want to fix a gauge?
  • hideelo
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Graduate Physical significance of Eigenvalues and Eigenvector?
  • kgirish
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Graduate The Immirzi Parameter: Unravelling Gravity's Weakness in Vacuum LQG
  • tzimie
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Graduate Is there a good candidate Hamiltonian for loop QG?
  • kodama
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Graduate Dark Matter effect in Lattice Space
  • czes
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Graduate Does quantized gravity mean quantized time?
  • WhatIsGravity
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Graduate Is Physics a Matter of Applying or Deriving Mathematics?
  • thinkandmull
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Graduate What are some common misconceptions about fields in physics?
  • Isaac0427
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Graduate String theory, string dimensions?
  • Nav
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Graduate Understanding Unified Forces in the Early Universe
  • member 529879
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Graduate Lagrangian for Perfect Fluid Euler Equation
  • Andre' Quanta
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Undergrad How can strings be only one dimensional?
  • Nav
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Graduate I need intuition for Lagrangians and action
  • hideelo
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Graduate What does the EM gauge freedom have to do with U(1)
  • hideelo
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Graduate Space-time travel in String Theory
  • alvarogz
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Graduate Which of these books would you recommend for LQG?
  • cpsinkule
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Graduate Chaos (Non-Linear Dynamics) Driven Damped Pendulum
  • H-S-D
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Graduate Lagrangian of two body problem with spin
  • Vrbic
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Graduate Deriving Commutation of Variation & Derivative Operators in EL Equation
  • hideelo
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Graduate Why is it necessary to have 11 dimensions in M Theory?
  • B936
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Undergrad Degrees of Freedom in Physics: Theory & Solutions
  • chimay
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Undergrad Why is Gravity Weak? Understanding the Fundamental Forces and Magnetism
  • TimeRip496
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Graduate What is the right theory of quantum gravity?
  • Lariko
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Graduate Information Preservation and Weather Forecasting for Black Holes
  • craigi
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Graduate Differential Form - Notation Help
  • Mistake Not...
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Graduate Quantum Relativity: Universe is "One" Thing?
  • Benplace
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Graduate AdS/CFT w/out Holography and SLOT - Fluctuation Work Theorem
  • Jimster41
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Graduate What is the role of T-duality in understanding length scales in string theory?
  • "pi"mp
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Graduate Do Different Observers Agree on Entropy in the Unruh Effect?
  • tzimie
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Undergrad Moon Earth binar system by math
  • Vrbic
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Graduate Relaxion: New idea for naturalness
  • mfb
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Graduate Leading lines of development in LQG, main issues, Loops 15
  • marcus
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Undergrad Lagrangian and Hamiltonian. What are these in layman terms?
  • avito009
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Is there any news to Garrett Lisi theory?
  • MTd2
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Graduate What is the acceleration formula for particles in Loop Quantum Gravity?
  • naima
  • · Replies 7 ·
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Graduate Product rule for vector derivative
  • Bullwinckle
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Graduate Color Kinematics Duality and Asymptotic Safety
  • erkokite
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Graduate Looking for an explanation/definition of a "causal diamond"
  • Jimster41
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Graduate Bekenstein bound on cosmological scales
  • tzimie
  • · Replies 7 ·
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  • Poll Poll
Graduate Our picks for first quarter 2015 MIP (most important QG paper)
  • marcus
  • · Replies 9 ·
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Graduate Einstein Equation of State vs Gravity from Entanglement
  • S.Daedalus
  • · Replies 6 ·
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Graduate T hooft Cellular Automata Quantum Mechanics
  • twistor
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Graduate Can String Theory's Extra Dimensions Be Larger Than We Think?
  • Stanley Lee
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Graduate 3D Coordinate transformation and Euler Angles
  • clandarkfire
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Graduate Background independent framework
  • Topolfractal
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Graduate Mathematical Modelling An Object for a System
  • Chrono G. Xay
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Graduate Hybrid HE11 mode of corrugated waveguides as source of axion
  • Ricvil
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Undergrad How many dimentions are known, what is there or what exists?
  • alteredmind
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Graduate Strings can be seen? Surely not
  • james gander
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Graduate What is Lee Smolin's Maximal Variety Principle in Quantum Mechanics?
  • Jimster41
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Can a Person Escape an Endless Fall Through Two Facing Portals?
  • Toby N
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Graduate How do you express 3D charge distributions using the Dirac Delta function?
  • ZetaX
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Graduate What is the quantized form of the strings lagrangian?
  • Topolfractal
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