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.
Probability of Inflation in Loop Quantum Cosmology (new Ashtekar Sloan paper)
  • · Replies 8 ·
Replies
8
Views
4K
A bigger structure than multiverse
  • · Replies 3 ·
Replies
3
Views
9K
String Theory: Quark/Atom Strings Estimate
  • · Replies 4 ·
Replies
4
Views
3K
Foundations of a theory of quantum gravity - Johan Noldus' book.
  • · Replies 134 ·
5
Replies
134
Views
28K
Is there any definitive answer on unitarity in quantum gravity
  • · Replies 12 ·
Replies
12
Views
5K
Are strings the key to understanding energy in string theory?
  • · Replies 2 ·
Replies
2
Views
2K
Isn't M-theory and the multiverse idea a bit discouraging?
  • · Replies 4 ·
Replies
4
Views
5K
New FQXI essay contest Is Reality Digital or Analog?
  • · Replies 41 ·
2
Replies
41
Views
10K
Why is QM incompatible with GR and how does string theory solve this? Or M-Theory?
  • · Replies 7 ·
Replies
7
Views
5K
Why point particle interaction has UV divergence,but string interaction does not?
  • · Replies 3 ·
Replies
3
Views
5K
Latest results from the LHC are casting doubt on the theory of supersymmetry
  • · Replies 27 ·
Replies
27
Views
7K
Naked singularities: evidence against compactified dimensions?
  • · Replies 44 ·
2
Replies
44
Views
8K
Holography and Calabi-Yau compactifications
  • · Replies 5 ·
Replies
5
Views
4K
The road to AdS/CFT-Correspondence
  • · Replies 8 ·
Replies
8
Views
5K
Best Approach to Quantum Gravity
  • · Replies 2 ·
Replies
2
Views
3K
Lectures on Loop Gravity (8 talks on the new version)
  • · Replies 13 ·
Replies
13
Views
5K
Core lecture abstracts for QG school
  • · Replies 18 ·
Replies
18
Views
6K
Quantum from classical behavior in higher dimensions?
  • · Replies 4 ·
Replies
4
Views
3K
What are gravitons exactly and how will they help us prove string
  • · Replies 17 ·
Replies
17
Views
5K
Information about black branes
  • · Replies 2 ·
Replies
2
Views
2K
The Probing of, Approximation to and Idealization of Structure for Foundations
  • · Replies 6 ·
Replies
6
Views
3K
Why is spacetime four-dimensional
  • · Replies 78 ·
3
Replies
78
Views
12K
Modular invariance in string theory
  • · Replies 14 ·
Replies
14
Views
6K
Where can I read about the superconformal algebra in 4D?
  • · Replies 8 ·
Replies
8
Views
5K
Garett Lisi's 248-dimensional theory?
  • · Replies 12 ·
Replies
12
Views
5K
Is String Theory the Key to Unifying Quantum Physics and Gravity?
  • · Replies 8 ·
Replies
8
Views
3K
Is Verlinde's Gravity Theory Based on Relativistic Assumptions?
  • · Replies 104 ·
4
Replies
104
Views
22K
Ontology of AdS/CFT classical on the bulk?
  • · Replies 1 ·
Replies
1
Views
2K
Can Loop Gravity and String Theory be Compared Fairly?
  • · Replies 1 ·
Replies
1
Views
2K
LQC and string theory combined in one theory
  • · Replies 51 ·
2
Replies
51
Views
9K
Semiclassical Limit of Causal Dynamical Triangulations (Ambjorn, Loll et al)
  • · Replies 2 ·
Replies
2
Views
3K
How could spacetime become discretised at the Planck scale?
  • · Replies 27 ·
Replies
27
Views
8K
AdS/CFT correspondence and the cosmological constant
  • · Replies 3 ·
Replies
3
Views
3K
  • Poll Poll
Theoretical Physics: Most Precise & Powerful Science
  • · Replies 16 ·
Replies
16
Views
3K
Is the Creation of Our Universe from Nothing Truly Viable and Consistent?
  • · Replies 84 ·
3
Replies
84
Views
24K
Century interons and quantum flux
  • · Replies 1 ·
Replies
1
Views
2K
Do gravitons interact with photons?
  • · Replies 6 ·
Replies
6
Views
7K
Is speculation in multiverses as immoral as speculation in subprime mortgages?
  • · Replies 17 ·
Replies
17
Views
5K
Why did the other dimensions stay small in M-theory?
  • · Replies 2 ·
Replies
2
Views
6K
QG five principles: superpos. locality diff-inv. cross-sym. Lorentz-inv.
  • · Replies 139 ·
5
Replies
139
Views
22K
Counting Ghost Numbers in String Theory | Beltrami Parametrization
  • · Replies 6 ·
Replies
6
Views
3K
Joe Henson rediscovers Rovelli Smerlak (dropping ontic definiteness assumption)
  • · Replies 6 ·
Replies
6
Views
4K
A question about graviton self-interactions in QFT
  • · Replies 13 ·
Replies
13
Views
5K
New Limits on Planck Scale Lorentz Violation (Floyd Stecker)
  • · Replies 0 ·
Replies
0
Views
2K
Signs LQG has the right redefinition (or wrong?)
  • · Replies 140 ·
5
Replies
140
Views
21K
Nonlinear, nonrelative wavefunction
  • · Replies 3 ·
Replies
3
Views
3K
Unraveling the Mystery of Super Symmetry
  • · Replies 14 ·
Replies
14
Views
5K
Clarification: relation spin network/spinfoam and Wen's Qbit lattice
  • · Replies 10 ·
Replies
10
Views
3K
Suppose gravitons and Higgs were quasiparticles like phonons
  • · Replies 7 ·
Replies
7
Views
5K
What is the center of SU(3) group
  • · Replies 1 ·
Replies
1
Views
6K
If LQG now satisfactory, how to add matter?
  • · Replies 82 ·
3
Replies
82
Views
20K
Gravity as a Zitterbewegung Interaction
  • · Replies 2 ·
Replies
2
Views
4K
State Sums and (Quantum) Geometry: Frank Hellmann's PhD thesis
  • · Replies 1 ·
Replies
1
Views
4K
How Much Info for Building a Universe?
  • · Replies 9 ·
Replies
9
Views
4K
Lecture of Edward Witten and 2nd Dutch-IFT School (BRAZIL)
  • · Replies 1 ·
Replies
1
Views
3K
An Exceptionally Simple Theory of Everything
  • · Replies 208 ·
7
Replies
208
Views
133K
String Theory vs. Superstring theory
  • · Replies 5 ·
Replies
5
Views
23K
A Slant on Warped Extra Dimensions
  • · Replies 36 ·
2
Replies
36
Views
7K
Hot QG+M paper by John Barrett
  • · Replies 14 ·
Replies
14
Views
4K
Birth Control in Euclidean Quantum Gravity: CDT
  • · Replies 2 ·
Replies
2
Views
2K
Interested in Spinfoam Cosmology? Check out Francesca Vidotto's Online Talk!
  • · Replies 6 ·
Replies
6
Views
3K
Interesting topics in Beyond the Standard Model
  • · Replies 4 ·
Replies
4
Views
3K
John Baez and John Huerta Paper
  • · Replies 7 ·
Replies
7
Views
6K
BeGroMaS: gravity was renormalizable after all, so why all the fuss?
  • · Replies 148 ·
5
Replies
148
Views
23K
How can we systematically derive Casimir operators for graded Lie algebras?
  • · Replies 1 ·
Replies
1
Views
3K
Fractal Space-Time and Microphysics: Towards a Theory of Scale Relativity
  • · Replies 27 ·
Replies
27
Views
14K
FQXi grant awardee abstracts (novel time ideas)
  • · Replies 61 ·
3
Replies
61
Views
11K
Gravity as a diffeomorphism invariant gauge theory (new Krasnov paper)
  • · Replies 1 ·
Replies
1
Views
3K
What is the factor in the definition of [A,A] in differential forms?
  • · Replies 1 ·
Replies
1
Views
2K
Constants of nature as determined by string theory
  • · Replies 4 ·
Replies
4
Views
5K
What dictates the differences between realms within string theory?
  • · Replies 3 ·
Replies
3
Views
2K
How does string theory address problem of time GR vs QM?
  • · Replies 8 ·
Replies
8
Views
4K
Why not unify LQG with Superstring\M theory ?
  • · Replies 5 ·
Replies
5
Views
3K
Do the extra dimensions really make sense?
  • · Replies 6 ·
Replies
6
Views
4K
What causes topology change in Calabi-Yau manifolds?
  • · Replies 5 ·
Replies
5
Views
4K
Decomposition of irrep. of G_2 into irreps. of A_2
  • · Replies 2 ·
Replies
2
Views
3K
Gravity Weakness: Explaining Why It's Not as Weak as We Think
  • · Replies 20 ·
Replies
20
Views
9K
A crazy idea about strings and energy
  • · Replies 2 ·
Replies
2
Views
2K
Spinfoam Fermions, Lqg now has matter
  • · Replies 22 ·
Replies
22
Views
6K
Can Spin Networks Overcome the Background Dependence in LQG Theory?
  • · Replies 4 ·
Replies
4
Views
2K
Tears in spacetime shielded by strings
  • · Replies 4 ·
Replies
4
Views
4K
Why Are There 11 Dimensions in M-Theory?
  • · Replies 16 ·
Replies
16
Views
6K
What is the connection between polytopes and string theory in these papers?
  • · Replies 8 ·
Replies
8
Views
3K
Supercharges commutation rules
  • · Replies 7 ·
Replies
7
Views
4K
Vielbeins as gauge fields of local translations
  • · Replies 14 ·
Replies
14
Views
5K
Can Lorentzian Signature Metrics Always Be Continued into Euclidean Signatures?
  • · Replies 3 ·
Replies
3
Views
2K
Changing shape of calabi-yau manifolds: flop transitions
  • · Replies 5 ·
Replies
5
Views
4K
Is N=4 ONLY a mathematical construct?
  • · Replies 3 ·
Replies
3
Views
3K
Time discreteness and lorentz invariance
  • · Replies 47 ·
2
Replies
47
Views
11K
Looking for the audio of the Duff-Smolin debate
  • · Replies 3 ·
Replies
3
Views
3K
What is the Planck Scale for AS gravity?
  • · Replies 18 ·
Replies
18
Views
6K
Impact of Gödel's incompleteness theorems on a TOE
  • · Replies 314 ·
11
Replies
314
Views
47K
Quantum foam and discreteness of spactime for an idiot
  • · Replies 3 ·
Replies
3
Views
3K
How does string theory avoids IR divergences
  • · Replies 20 ·
Replies
20
Views
5K
String Theory: Minimal Distance Implications
  • · Replies 12 ·
Replies
12
Views
4K
What is the role of combinatorics in the depths of string theory?
  • · Replies 10 ·
Replies
10
Views
3K
Piareround's questions about LQG
  • · Replies 1 ·
Replies
1
Views
2K
GUT Mass Unification Predictions
  • · Replies 2 ·
Replies
2
Views
4K
Criticism of LQG - What do we miss?
  • · Replies 31 ·
2
Replies
31
Views
6K
Is the Higgs Field Merely a Dressing Field?
  • · Replies 12 ·
Replies
12
Views
4K