Beyond the Standard Models Forum

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 Solving Differential Equations: Understanding Variable Changes

  • bassplayer142
  • · Replies 5 ·
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5

Graduate Bertram Kostant on the mathematics of E8 and Garrett Lisi's unified theory

  • John Baez
  • · Replies 1 ·
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1

Anyone else like CDT and what it is promising?

  • Riogho
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Graduate Questions about Witten's recent articles

  • ehrenfest
  • · Replies 1 ·
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1

Graduate HELP Why CS is topological? Why BF is topological?

  • astros
  • · Replies 1 ·
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1

Graduate Map of QG (Perimeter view, January 2008 update)

  • marcus
  • · Replies 4 ·
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4

Graduate How Does Category Theory Enhance Understanding of Physics?

  • klw1026@gmail.com
  • · Replies 2 ·
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Graduate Can strings vibrating at different frequencies explain parallel worlds?

  • calvin
  • · Replies 6 ·
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6

Graduate Linking Connes NCG to LQG (new papers by Aastrup et al)

  • marcus
  • · Replies 2 ·
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2

Graduate As always, if you have any questions, feel free to ask.Claus

  • slugcountry
  • · Replies 6 ·
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6

Graduate What fallacies exist in arguments against gravitons?

  • alsey42147
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5

Undergrad Why use Taylor expansion for gravitational fields instead of dimensional analysis

  • scott_alexsk
  • · Replies 3 ·
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3

Graduate Does the N-Dimensional Wave Equation Apply Beyond 1-2 Dimensions?

  • droz
  • · Replies 1 ·
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1

Graduate Model Universe: Shortest Path to Gravity Corridors

  • Dennis Sugden
  • · Replies 1 ·
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1

Graduate Does string theory explain why objects have inertia?

  • Liger20
  • · Replies 1 ·
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1

Graduate What causes superstrings to vibrate and what's the energy source?

  • risingphoenix
  • · Replies 1 ·
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1

Graduate Coherent States and the Role of Classical Variables in Quantizing Gravity

  • Federation 2005
  • · Replies 6 ·
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Graduate Are fractals related to string theory?

  • xeon
  • · Replies 2 ·
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2

Graduate Singular disk of matter in the Cooperstock-Tieu galaxy model

  • shalayka
  • · Replies 6 ·
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6

Graduate What does the Witten index tell us about SU(N) supersymmetric vacua?

  • BenTheMan
  • · Replies 2 ·
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2

Graduate Background independence and measures in Rovelli's approach to quantum gravity

  • Fra
  • · Replies 6 ·
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6

Graduate Proof of extra dimension from primordial BHs

  • friend
  • · Replies 4 ·
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4

High School Is energy the 4th dimension instead of time?

  • guirguis04
  • · Replies 4 ·
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4

Graduate Learning loop quantum gravity from Rovelli's book

  • marcus
  • · Replies 8 ·
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8

Graduate Matter-like braids in geometry-video talk by Yidun Wan

  • marcus
  • · Replies 0 ·
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0

Undergrad String tension and pitch in ancient Pythagorean physics

  • Loren Booda
  • · Replies 4 ·
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4

Graduate On Snyder's paper on Quantized Space-Time

  • arkobose
  • · Replies 3 ·
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3

Graduate Most General Canonical Transformation?

  • strangerep
  • · Replies 0 ·
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0

Graduate Why was M-theory developed and how does it help physics?

  • cowxfarm
  • · Replies 11 ·
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11
  • Poll Poll

Graduate Has Smolin's Book Influenced the U.S. Academic Monopoly on String Theory?

  • marcus
  • · Replies 27 ·
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27

Graduate Sectors in String theory and the N-S N-S sector

  • robousy
  • · Replies 2 ·
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2

Graduate Is String Theory Still the Best Path to a Unified Theory of Everything?

  • Gazee
  • · Replies 4 ·
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4

Graduate Video: The Problem of Time in Quantum Gravity and Cosmology

  • marcus
  • · Replies 19 ·
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19

Graduate Nakanishi proves 2-d string theories inconsistent(?)

  • sluser
  • · Replies 3 ·
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3

Graduate Can gravity be renormalized like effective field theories?

  • BenTheMan
  • · Replies 29 ·
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29

Graduate Open Strings, D-Branes, and Conservation of Energy

  • Keys
  • · Replies 2 ·
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2

Thomas Thiemann's Book - Is It Worth the Price?

  • Jim Kata
  • · Replies 18 ·
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18

Graduate Gauge fixing and residual symmetries

  • StatusX
  • · Replies 0 ·
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Graduate My Thoughts on Quantum Uncertainty

  • tycon69
  • · Replies 2 ·
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Graduate Why do quantum field theory calculations give infinite probabilities?

  • muppet
  • · Replies 2 ·
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2

Graduate Susy introduction paper superspace

  • Barmecides
  • · Replies 1 ·
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Graduate Why Poisson doesn't use second derivatives in his original paper

  • gibsonphysics
  • · Replies 2 ·
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2

Graduate Can Compact Dimensions be Explained in Terms of Rudimentary Field Theory?

  • Sojourner01
  • · Replies 2 ·
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Graduate SciAm special report on Future of Physics

  • marcus
  • · Replies 1 ·
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1

Graduate What symmetry of the Lagrangian corresponds to mass conservation?

  • lugita15
  • · Replies 26 ·
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26

Graduate Quantum graphity and emergent U(1) gauge in LQG spin networks

  • ensabah6
  • · Replies 6 ·
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6

Graduate Is quantum mechanics an approximation to a cosmological theory?

  • Fra
  • · Replies 8 ·
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8

Graduate Hyperspheres describing the universe

  • thebluelagoon
  • · Replies 2 ·
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Graduate String theory vs loop quantum gravity citation rates in 2006

  • marcus
  • · Replies 6 ·
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6

Graduate Is Gravity a Result of Other Forces at Work?

  • Azmodii
  • · Replies 3 ·
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3

Graduate Triangulations study group, Spring 2008

  • marcus
  • · Replies 39 ·
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Graduate Volovik's Fermi point scenario as a theory of everything

  • ensabah6
  • · Replies 8 ·
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Graduate What does negative length mean in physics?

  • Meatbot
  • · Replies 4 ·
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4

Graduate Supersymmetry: Understanding Weinberg's Formula on Page 78

  • Eisenhorn
  • · Replies 4 ·
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4

Graduate What happens to a superstring with no vibration modes?

  • CaptainGuevar
  • · Replies 2 ·
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2

Graduate How Does Hawking Radiation from LHC Experiments Affect Time-Space Dynamics?

  • Iam_walrus
  • · Replies 2 ·
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2

Graduate Can the LHC detect gravitons?

  • scupydog
  • · Replies 11 ·
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11

Undergrad Dimensional Analysis: Separating Fact from Fiction

  • dougr81
  • · Replies 5 ·
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5

Graduate Can you slice and move a membrane bubble through bulk space?

  • Toastus
  • · Replies 4 ·
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4

Undergrad String book for the undergrad level

  • daniel_i_l
  • · Replies 10 ·
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10

Graduate Differences between superstring theory and M-theory

  • chronie
  • · Replies 5 ·
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5

Graduate Quantum Foam: Could It Be Used for Subspace Communication?

  • Toastus
  • · Replies 9 ·
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9
  • Poll Poll

Graduate What were the major QG advancements in 2007?

  • marcus
  • · Replies 3 ·
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3

Graduate Newton's Law starting from no background spacetime

  • marcus
  • · Replies 2 ·
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2
  • Poll Poll

Graduate Has Recent Research Challenged the Validity of String Theory?

  • Liger20
  • · Replies 7 ·
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7

Graduate What are the principles of our time?

  • Peter Morgan
  • · Replies 1 ·
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1

Graduate Is Space Discrete or Continuous in a Planck World?

  • dst
  • · Replies 4 ·
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4

Graduate What are the implications of having two dimensions of time?

  • Meatbot
  • · Replies 2 ·
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2

Graduate LQG: Gauge Theory, Holonomies, Ashtekar's GR, Loop Representation

  • Coin
  • · Replies 2 ·
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2

Graduate String theory topoogy can change lead to experimentally testable predictions?

  • ensabah6
  • · Replies 1 ·
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1

Graduate Supersymmetric Transformations

  • ophase
  • · Replies 3 ·
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3
  • Poll Poll

Graduate Has string theory been totally written off?

  • pivoxa15
  • · Replies 31 ·
2
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31

Graduate Them old quantum gravity, topological quantum field thereah blues

  • marcus
  • · Replies 1 ·
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1

Graduate What conserved quantity corresponds to time reversal symmetry?

  • lugita15
  • · Replies 1 ·
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1

Graduate Does the Concept of Center of Mass-Energy Exist in Physics?

  • Himanshu
  • · Replies 7 ·
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7

Graduate Can geometry predict particle mass ratios and the fine structure constant?

  • sooperdooper
  • · Replies 2 ·
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2

Graduate Why Must Extra Spatial Dimensions in String Theory Be Compactified?

  • RobCS
  • · Replies 1 ·
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1

Graduate Question to the String theorists

  • f-h
  • · Replies 1 ·
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1

Graduate Edward Witten on LQG for lambda > 0, QG does not exist in any dimension

  • ensabah6
  • · Replies 5 ·
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5

Graduate Kenneth Lane string theory is not physics

  • ensabah6
  • · Replies 10 ·
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10

What is U? A Christmas mind game?

  • wolram
  • · Replies 6 ·
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6

Graduate Integrable models and the frontiers of physics?

  • pivoxa15
  • · Replies 3 ·
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3

Two Is Enough: Harmonics and Echoes

  • wolram
  • · Replies 2 ·
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2

Graduate How Can a Theory of Quantum Gravity or a TOE Impact Science?

  • PhilosophyofPhysics
  • · Replies 13 ·
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13

Graduate Fecund universes and physical constants

  • hammertime
  • · Replies 11 ·
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11

Graduate Classical interacting random field models

  • Peter Morgan
  • · Replies 24 ·
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24

Graduate New Warp Drive Paper: Read the Co-Authored Journal Article

  • robousy
  • · Replies 8 ·
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8

Graduate Map of nonstring QG (as of November 2007)

  • marcus
  • · Replies 22 ·
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22

Graduate Is There Evidence of a Delay in High-Energy Photons from Distant AGN Flares?

  • marcus
  • · Replies 10 ·
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10

Graduate What is the Meaning of Entirely New Laws in Phil Anderson's More is Different?

  • Q_Goest
  • · Replies 3 ·
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3

Undergrad Ridiculous explanation of 'string theory'

  • Zoe-b
  • · Replies 11 ·
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11

Graduate Plebanski action extended to unify gravity and Yang-Mills theory

  • marcus
  • · Replies 23 ·
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23

Graduate Is the Graviton Fundamental in Quantum Gravity Theories?

  • Coin
  • · Replies 40 ·
2
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40

Graduate Amplitudes, metrics, and measures

  • friend
  • · Replies 7 ·
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7
  • Poll Poll

Graduate If I were Garrett Lisi, I'd postdoc at Nottingham

  • marcus
  • · Replies 31 ·
2
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31

Graduate Discrete spacetime (Some contemplations of mine).

  • MathematicalPhysicist
  • · Replies 17 ·
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17

Graduate Question regarding higgs, grravity, and electromagnetic dimensions

  • Yazirical
  • · Replies 3 ·
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3

Graduate Extended vector product reformulation of Maxwell's EM tensor

  • member 11137
  • · Replies 88 ·
3
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88

Graduate Internal struggles of ideas in QG

  • marcus
  • · Replies 5 ·
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5