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 Is Push Gravity a Viable Concept in Le Sage's Theory of Gravitation?
- Natsirt
- · Replies 3 ·
Graduate Lagrangian Definition and Summary
- Greg Bernhardt
- · Replies 1 ·
Graduate Hamiltonian in classical and quantum mechanics
- Greg Bernhardt
- · Replies 1 ·
Graduate What is the Hamilton-Jacobi equation
- Greg Bernhardt
- · Replies 1 ·
Graduate What is the Concept of Gauge Invariance in Physics?
- Greg Bernhardt
- · Replies 1 ·
Graduate What is to differentiate under the integral
- Greg Bernhardt
- · Replies 1 ·
Graduate Hamilton-Jacobi equation interpretation and the apparent contradiction with Lagrangian
- Zeno Marx
- · Replies 1 ·
Graduate Compactification of M Theory on Smooth G2 Manifolds
- d.hatch75
- · Replies 1 ·
Graduate How is the Nambu Goto action proportional to the world sheet area?
- maverick280857
- · Replies 6 ·
Graduate Could There Be a 5th Force at Lower Energies?
- Gerinski
- · Replies 7 ·
Graduate Is Unitarity Limited by Real Clocks in Quantum Gravity?
- marcus
- · Replies 34 ·
Graduate Expansion of a local dissipation function
- trabo
- · Replies 3 ·
Undergrad Mathematical proofs and an understanding of them for scientists
- DissenterK
- · Replies 9 ·
Graduate Euler-lagrange, positivity of second order term
- jostpuur
- · Replies 2 ·
Graduate Is any Hamiltonian system integrable?
- LLSM
- · Replies 1 ·
Graduate Regarding the Hawking radiation
- Matterwave
- · Replies 17 ·
Graduate Let's talk about geometrized units
- elegysix
- · Replies 2 ·
Graduate String Theory, Dark Matter And Dark Energy
- ggolu2
- · Replies 1 ·
Graduate Quantum Inflation of Classical Shapes by Tim Koslowski
- twistor
- · Replies 1 ·
Graduate How much stuff will neutralise the sun's pull on the earth
- bland
- · Replies 6 ·
Graduate Why use Lagrangian density instead of regular Lagrangian in E&M
- HJ Farnsworth
- · Replies 2 ·
Graduate Stephen Adler's SU(8) theory of everything
- mitchell porter
- · Replies 10 ·
Graduate Haggard and Rovelli against the Eddington principle
- Demystifier
- · Replies 5 ·
Graduate Can Gauge Theory Successfully Integrate with General Relativity?
- RiccardoVen
- · Replies 23 ·
Graduate Conceptualizing the Big Bounce in LQC
- Mahesvara
- · Replies 5 ·
Graduate Applying of knot theory to string theory
- shreyakmath
- · Replies 6 ·
Graduate Why does this Lagrangian seem "asymmetric"?
- Alexandre
- · Replies 10 ·
- Poll
Graduate First quarter 2014 MIP (most important QG paper) poll-great selection
- marcus
- · Replies 26 ·
Graduate Hamiltonian for classical harmonic oscillator
- Jacksond
- · Replies 1 ·
Witten on the fate of spacetime
- twistor
- · Replies 11 ·
Graduate CHR&R resolution of Jacobson's question on Einstein equation thermodynamics
- marcus
- · Replies 18 ·
Graduate Cosmology Papers: Interesting Old Papers - Share Your Thoughts
- twistor
- · Replies 6 ·
Graduate Concerning "Multiple Dimensions of Time"
- FysixFox
- · Replies 1 ·
Graduate Time-Dependent Classical Lagrangian with variation of time
- 586
- · Replies 6 ·
Graduate Solving the Most Complex Physical Features of Nature: How Far Off Are We?
- cjackson
- · Replies 3 ·
Undergrad What do 4x4 and nxn determinants represent and compute?
- thefreeman
- · Replies 3 ·
Graduate How do D-Brane arrangements affect particle masses and the standard model?
- latentcorpse
- · Replies 1 ·
Graduate Can Quantum Field Theories Exhibit S-Dualities with Distinct Lagrangians?
- metroplex021
- · Replies 1 ·
Graduate Sir Roger Penrose´s contributions
- twistor
- · Replies 24 ·
Graduate Jim Gates live webcast on supersymmetry June 4th
- Greg Bernhardt
- · Replies 4 ·
Undergrad The Lagrange Mesh Method: An Overview
- nakulphy
- · Replies 2 ·
Graduate Bekenstein bound and Cauchy's integral formula
- haael
- · Replies 1 ·
Undergrad Can mathematics explain everything in our universe?
- Niaboc67
- · Replies 3 ·
Graduate Lorentz invariance of Rarita-Schwinger action
- Bobhawke
- · Replies 3 ·
Graduate Green's Function of a homogeneous cylinder
- PeteyCoco
- · Replies 2 ·
Graduate Spin Foam Gravity at new stage of maturity/consistency
- marcus
- · Replies 13 ·
Graduate Visualizing Dimensional MLT quality
- seanwperry
- · Replies 2 ·
Graduate Is Determinism Challenged by the Brain's Decision-Making Ability?
- masbt
- · Replies 20 ·
Graduate Is the Fine-Tuning Argument Valid Without Sequential Data?
- noowutah
- · Replies 2 ·
Graduate Why does Planck energy divided by Planck temperature give the wrong Boltzmann constant?
- FysixFox
- · Replies 4 ·
Graduate String Theory AP physics project
- Aznespina
- · Replies 13 ·
Graduate How many scalars are needed in GUT theories?
- Niklas Nielsen
- · Replies 4 ·
Graduate How does energy convert into mass?
- AdrianLuther
- · Replies 19 ·
Graduate Should objects that are connected share the same physical laws?
- thedragonbook
- · Replies 22 ·
Graduate Susskind process and holographic principle
- M. next
- · Replies 1 ·
Undergrad Physics concepts that become intuitive with calculus
- axmls
- · Replies 4 ·
Graduate Did BICEP misinterpret Planck's galactic dust polarization data?
- MTd2
- · Replies 2 ·
Graduate Why do several Lie groups have the same Lie algebra when acting on a space?
- befj0001
- · Replies 6 ·
Undergrad Why is dy/dx treated like a fraction in calculus?
- xphysics
- · Replies 22 ·
Program working for simplicity
- MTd2
- · Replies 4 ·
Graduate String Theory and 4 dimensions
- Satya_Sen
- · Replies 3 ·
Graduate First variation of convolution of two nonlinear functions
- rrhd
- · Replies 1 ·
Graduate 'Constant' vector field is equivalent to some scalar field
- JanEnClaesen
- · Replies 6 ·
Graduate Algebra-geometry equivalence in string theory
- Logic Cloud
- · Replies 1 ·
Graduate Solutions to the string theory landscape
- twistor
- · Replies 4 ·
Graduate Noether's Theorem For Functionals of Several Variables
- bolbteppa
- · Replies 2 ·
Graduate What is the advantage of Hamilton's canonical equations?
- Zoli
- · Replies 5 ·
Graduate Why can't EM and nuclear forces be modeled as spatial curvature?
- Terdbergler
- · Replies 1 ·
Graduate Independent variables of the Lagrangian
- JanEnClaesen
- · Replies 2 ·
Graduate How photons emerge as string states in string theory
- Spinnor
- · Replies 2 ·
Graduate On Fundamental Closed String Solutions
- m1rohit
- · Replies 1 ·
Graduate Physical Interpretation of EM Field Lagrangian
- bolbteppa
- · Replies 3 ·
Undergrad Is Everything Really Energy According to Einstein's E=MC2?
- Larry Farmer
- · Replies 4 ·
Graduate Is Physics Truly Unique in Its Description of Nature?
- dipole
- · Replies 4 ·
Graduate Doubled of Minkowski space and spinor wave function
- bayak
- · Replies 1 ·
Graduate Death and Resurrection of the Zero-th Principle of Thermo
- julcab12
- · Replies 2 ·
Graduate 125 GeV Higgs and Vacuum Instability
- Coin
- · Replies 10 ·
Graduate What is meant by the following 2 statements?
- M. next
- · Replies 1 ·
Graduate Erik Verlinde's paper on Emergent Entropy
- M. next
- · Replies 2 ·
Graduate Predict The Day of Judgment (by real observation) is at hand-Smolin
- marcus
- · Replies 4 ·
Graduate Renormalization Group Approaches to Quantum Gravity (conference at PI)
- marcus
- · Replies 3 ·
Graduate Can fundamental constants vary in multiverse scenarios?
- ftr
- · Replies 2 ·
Graduate The gravitational field at a mass point produced by an infinite plane
- 3102
- · Replies 3 ·
Graduate Joe Lykken's 19 March talk at Cern
- marcus
- · Replies 10 ·
Graduate Intuitive explanation for action in the principle of least action
- nomadreid
- · Replies 8 ·
Graduate Do we have a theory as to what energy is?
- Larry Farmer
- · Replies 34 ·
Graduate Why 10^520 Universes in String Theory Landscape
- Quantizer
- · Replies 3 ·
Graduate Can supersymmetry survive without experimental guidance from LHC results?
- wolram
- · Replies 19 ·
Graduate Could this be of any importance for research nowadays?
- twistor
- · Replies 11 ·
Graduate Application of virial theorem
- TSC
- · Replies 2 ·
Graduate Arrow of time and virtual reality
- us40
- · Replies 2 ·
Graduate Does the Lagrangian Explicitly Involve Time in Hamiltonian Mechanics?
- astro2cosmos
- · Replies 7 ·
Graduate String theory and Statistical Physics
- M. next
- · Replies 5 ·
Graduate Mathematical Difference Between Mean Free Path vs RMS Free Path?
- RagincajunLA
- · Replies 12 ·
Graduate Particles in LQG: Are There Alternatives to Braids?
- twistor
- · Replies 4 ·
Graduate Is Kaluza-Klein Theory Proven by Experimental Results?
- Quarlep
- · Replies 4 ·
Graduate How many spacetime quanta are there? (depends how you count.)
- marcus
- · Replies 1 ·
Graduate What is the current mathematical formulation of M theory?
- twistor
- · Replies 2 ·
Graduate Did cosmological natural selection get a reprieve?
- bcrowell
- · Replies 11 ·
Graduate Does it make sense to study old (stringless) twistor theory nowadays?
- twistor
- · Replies 6 ·