Weak gravity conjecture - Misplaced Pages

Conjecture that gravity must be the weakest force

Modern physics
${\hat {H}}\|\psi _{n}(t)\rangle =i\hbar {\frac {d}{dt}}\|\psi _{n}(t)\rangle$ $G_{\mu \nu }+\Lambda g_{\mu \nu }={\kappa }T_{\mu \nu }$ Schrödinger and Einstein field equations
Founders Max Planck Albert Einstein Niels Bohr Max Born Erwin Schrödinger Werner Heisenberg Pascual Jordan Wolfgang Pauli Paul Dirac Ernest Rutherford Louis de Broglie Satyendra Nath Bose
Concepts Topology Space Time Energy Matter Work Randomness Information Entropy Light Particle Wave
Branches Applied Experimental Theoretical Mathematical Philosophy of physics Quantum mechanics Quantum field theory Quantum information Quantum computation Electromagnetism Weak interaction Electroweak interaction Strong interaction Atomic Particle Nuclear Atomic, molecular, and optical Condensed matter Statistical Complex systems Non-linear dynamics Biophysics Neurophysics Plasma physics Special relativity General relativity Astrophysics Cosmology Theories of gravitation Quantum gravity Theory of everything
Scientists Röntgen Witten Becquerel Lorentz Planck Curie Wien Skłodowska-Curie Sommerfeld Rutherford Soddy Onnes Einstein Wilczek Born Weyl Bohr Kramers Schrödinger de Broglie Laue Bose Compton Pauli Walton Fermi van der Waals Heisenberg Dyson Zeeman Moseley Hilbert Gödel Jordan Dirac Wigner Hawking P. W. Anderson Lemaître Thomson Poincaré Wheeler Penrose Millikan Nambu von Neumann Higgs Hahn Feynman Yang Lee Lenard Salam 't Hooft Veltman Bell Gell-Mann J. J. Thomson Raman Bragg Bardeen Shockley Chadwick Lawrence Zeilinger Goudsmit Uhlenbeck
Categories Modern physics
v t e

In theoretical physics, the weak gravity conjecture (WGC) is a conjecture regarding the strength gravity can have in a theory of quantum gravity relative to the gauge forces in that theory. It roughly states that gravity should be the weakest force in any consistent theory of quantum gravity. It was first proposed by Nima Arkani-Hamed, Luboš Motl, Alberto Nicolis, and Cumrun Vafa in 2007.

Gravity when compared to a U(1) gauge group interaction like electromagnetism, the mildest version of the weak gravity conjecture implies that there exist an object with electric charge q and mass m such that

${\frac {|q|}{m}}\geq \left.{\frac {|Q|}{M}}\right|_{\text{ext}}$

where $\left.Q/M\right|_{\text{ext}}$ is the charge-to-mass ratio of an arbitrary large black hole.

The conjecture was originally motivated by the fact that black holes should be able to decay. This insensitivity of black hole evaporation to its electric charge suggests that black holes can violate global symmetries and violate global charge conservation.

References

^ Harlow, Daniel; Heidenreich, Ben; Reece, Matthew; Rudelius, Tom (2023-09-06). "Weak gravity conjecture". Reviews of Modern Physics. 95 (3): 035003. arXiv:2201.08380. doi:10.1103/RevModPhys.95.035003. ISSN 0034-6861.
Arkani-Hamed, Nima; Motl, Luboš; Nicolis, Alberto; Vafa, Cumrun (2007-06-15). "The string landscape, black holes and gravity as the weakest force". Journal of High Energy Physics. 2007 (6): 060. arXiv:hep-th/0601001. doi:10.1088/1126-6708/2007/06/060. ISSN 1029-8479.

This quantum mechanics-related article is a stub. You can help Misplaced Pages by expanding it.

Categories:

See also

References