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
Graduate Continuum Idealization: Treating Properties as Point Functions
- Ali Asadullah
- · Replies 1 ·
Graduate Any application of AdS/CFT to nucleon structure?
- petergreat
- · Replies 2 ·
Graduate Particle Physics in Curved Spacetime (Background Independent)
- rogerl
- · Replies 37 ·
Graduate A question on the action as a function of the co-ordinates in Landau 1
- dfj
- · Replies 4 ·
Graduate Does the nabla operator has a unit?
- jwillie2000
- · Replies 6 ·
Graduate How do I know if the Hamiltonian is constant?
- komodekork
- · Replies 9 ·
Graduate String Theory State and History
- Pythagorean
- · Replies 57 ·
Graduate Does loop quantum gravity recover general relativity in the classical limit?
- Physics Monkey
- · Replies 27 ·
Graduate Question on transformation of coordinates.
- yungman
- · Replies 29 ·
Graduate Is Quantum Gravity only related to Planck Scale?
- rogerl
- · Replies 7 ·
Graduate Closed Strings and Virasoro algebra
- earth2
- · Replies 3 ·
Graduate Progress of Bouncing Universe Theory
- wolram
- · Replies 16 ·
Graduate Does physics explain reality or just model measurements?
- rogerl
- · Replies 2 ·
Graduate Solving a Lagrangian using an Ansatz
- bantalon
- · Replies 1 ·
Graduate Experimental Predictions from String Theories
- ApplePion
- · Replies 3 ·
Graduate Clarifying Open String Hamiltonian for Witten's Book
- cuerdero
- · Replies 7 ·
Graduate Bogolubov Transformations: How to Normalize the Coefficients?
- LAHLH
- · Replies 6 ·
Graduate How does the Riemann zeta function give -1/12 for the sum of natural numbers?
- zaybu
- · Replies 26 ·
Graduate Dimensional regularization and Fractals - Is it a crackpot idea?
- petergreat
- · Replies 3 ·
Graduate Strings as described in Superstring theory
- robertroman10
- · Replies 3 ·
Graduate What is meant by no complete TOE ?
- curtdbz
- · Replies 11 ·
Graduate Probability of Inflation in Loop Quantum Cosmology (new Ashtekar Sloan paper)
- marcus
- · Replies 8 ·
Graduate A bigger structure than multiverse
- dhillonv10
- · Replies 3 ·
Graduate String Theory: Quark/Atom Strings Estimate
- robertroman10
- · Replies 4 ·
Undergrad Can't there be no approximation?
- cometzir
- · Replies 29 ·
Graduate Foundations of a theory of quantum gravity - Johan Noldus' book.
- MTd2
- · Replies 134 ·
Graduate Jacobi least time vs. Fermat Hamilton
- andrewr
- · Replies 3 ·
Graduate Is there any definitive answer on unitarity in quantum gravity
- petergreat
- · Replies 12 ·
Graduate Are Physics Models Truly Simple or Inherently Complex?
- revo74
- · Replies 7 ·
Undergrad Verify Integration and differentiation of a vector.
- yungman
- · Replies 6 ·
Undergrad How are strings related to energy in string theory?
- luan
- · Replies 2 ·
Graduate Isn't M-theory and the multiverse idea a bit discouraging?
- reoffender
- · Replies 4 ·
Graduate How can we find out from the Lagrangian if energy is conserved?
- czdatka
- · Replies 2 ·
Graduate Do the fundamental forces continue to break down at lower energies?
- middistance91
- · Replies 3 ·
New FQXI essay contest Is Reality Digital or Analog?
- chronon
- · Replies 41 ·
Graduate Understanding Hamiltonian Field Equations and Their Applications in Field Theory
- MManuel Abad
- · Replies 8 ·
Graduate 2-form and dissipative systems
- homology
- · Replies 39 ·
Graduate Why is QM incompatible with GR and how does string theory solve this? Or M-Theory?
- SeventhSigma
- · Replies 7 ·
Graduate Why point particle interaction has UV divergence,but string interaction does not?
- ndung200790
- · Replies 3 ·
Graduate LHC results challenge supersymmetry theory
- J.F.
- · Replies 27 ·
Graduate Do naked singularities from black string instability rule out extra dimensions?
- Lievo
- · Replies 44 ·
High School Reason Behind Structure of Equations
- prosteve037
- · Replies 13 ·
Graduate Holography and Calabi-Yau compactifications
- crackjack
- · Replies 5 ·
Graduate The road to AdS/CFT-Correspondence
- Hymne
- · Replies 8 ·
Graduate Best Approach to Quantum Gravity
- rogerl
- · Replies 2 ·
Graduate EM Field Lagrangian: What Defines It?
- snoopies622
- · Replies 5 ·
Graduate Lectures on Loop Gravity (8 talks on the new version)
- marcus
- · Replies 13 ·
Graduate Core lecture abstracts for QG school
- marcus
- · Replies 18 ·
Graduate Quantum from classical behavior in higher dimensions?
- SupremeFunky
- · Replies 4 ·
Graduate Why do we multiply by units instead of dividing?
- puzzler7
- · Replies 3 ·
Graduate Interaction energy and gauge invariance
- arpharazon
- · Replies 1 ·
Graduate How do gravitons help prove string theory?
- d.smith292
- · Replies 17 ·
Graduate Information about black branes
- unih
- · Replies 2 ·
Graduate The Probing of, Approximation to and Idealization of Structure for Foundations
- bensprott
- · Replies 6 ·
Graduate Why is spacetime four-dimensional
- tom.stoer
- · Replies 78 ·
Graduate Modular invariance in string theory
- petergreat
- · Replies 14 ·
Graduate Hamilton-Jacobi Theory: Why No Time Dependence?
- Zorba
- · Replies 5 ·
Graduate Where can I read about the superconformal algebra in 4D?
- petergreat
- · Replies 8 ·
Undergrad Book for the application of Calculus in Physics?
- Ashu2912
- · Replies 2 ·
Graduate Garett Lisi's 248-dimensional theory?
- Matthewkind
- · Replies 12 ·
Graduate Is String Theory the Key to Unifying Quantum Physics and Gravity?
- whatisreality
- · Replies 8 ·
Graduate Is Verlinde's Gravity Theory Based on Relativistic Assumptions?
- Pengwuino
- · Replies 104 ·
Graduate Ontology of AdS/CFT classical on the bulk?
- SupremeFunky
- · Replies 1 ·
Graduate Can Loop Gravity and String Theory be Compared Fairly?
- marcus
- · Replies 1 ·
Graduate LQC and string theory combined in one theory
- dhillonv10
- · Replies 51 ·
Graduate What is the physical significance of the iFactor?
- purrcy
- · Replies 7 ·
Graduate Is Complexity in the Universe Emergent from Simpler Systems?
- BruceNakagawa
- · Replies 3 ·
Graduate Semiclassical Limit of Causal Dynamical Triangulations (Ambjorn, Loll et al)
- marcus
- · Replies 2 ·
Graduate How could spacetime become discretised at the Planck scale?
- DJsTeLF
- · Replies 27 ·
Graduate What is the physical interpretation of this calculus of variations problem?
- catpants
- · Replies 2 ·
Graduate AdS/CFT correspondence and the cosmological constant
- dhillonv10
- · Replies 3 ·
Graduate Is the Creation of Our Universe from Nothing Truly Viable and Consistent?
- haushofer
- · Replies 84 ·
Graduate Century interons and quantum flux
- jonnke123
- · Replies 1 ·
Graduate Do gravitons interact with photons?
- johne1618
- · Replies 6 ·
Graduate Is speculation in multiverses as immoral as speculation in subprime mortgages?
- D H
- · Replies 17 ·
Graduate Why did the other dimensions stay small in M-theory?
- cansay27
- · Replies 2 ·
Graduate Quantum gravity transition amplitudes from five principles
- marcus
- · Replies 139 ·
Graduate Can Multiple Infinite Quantum Fields Coexist in Spacetime?
- sci-guy
- · Replies 10 ·
Graduate How do I count ghost number and form degree in Beltrami parametrization?
- christodouloum
- · Replies 6 ·
Graduate Henson's ontic definiteness relaxation parallels Rovelli-Smerlak
- marcus
- · Replies 6 ·
Graduate Could a minimum energy threshold for graviton self-interactions enable renormalization?
- ensabah6
- · Replies 13 ·
Graduate New Limits on Planck Scale Lorentz Violation (Floyd Stecker)
- marcus
- · Replies 0 ·
Graduate Signs LQG has the right redefinition (or wrong?)
- marcus
- · Replies 140 ·
Graduate How will we know a true T.O.E. when we see it?
- mrspeedybob
- · Replies 1 ·
Graduate Nonlinear, nonrelative wavefunction
- Loren Booda
- · Replies 3 ·
Graduate What is supersymmetry and why do physicists use it?
- Lazernugget
- · Replies 14 ·
Graduate Relation between Wen's qubit lattice, spin networks, and spin foam models
- ensabah6
- · Replies 10 ·
Graduate Suppose gravitons and Higgs were quasiparticles like phonons
- ensabah6
- · Replies 7 ·
Graduate Relationship between Lagrangian and Energy
- theneedtoknow
- · Replies 2 ·
Graduate What is the center of SU(3) group
- sufive
- · Replies 1 ·
Graduate How to mobilize solid molecules
- anwerfz
- · Replies 4 ·
Graduate If LQG now satisfactory, how to add matter?
- marcus
- · Replies 82 ·
Graduate Gravity as a Zitterbewegung Interaction
- Dcase
- · Replies 2 ·
Graduate State Sums and (Quantum) Geometry: Frank Hellmann's PhD thesis
- marcus
- · Replies 1 ·
Graduate How Much Info for Building a Universe?
- wolram
- · Replies 9 ·
Graduate Lecture of Edward Witten and 2nd Dutch-IFT School (BRAZIL)
- ccdantas
- · Replies 1 ·
Graduate An Exceptionally Simple Theory of Everything
- marcus
- · Replies 208 ·
Graduate String Theory vs. Superstring theory
- Swapnil
- · Replies 5 ·
Graduate EM Lagrangian in terms of E and B
- Rocky Raccoon
- · Replies 8 ·