Chern-Simons Modified General Relativity

By S. Alexander, N. Yunes. 2009

669 citations recorded by the source corpus.

Abstract Chern–Simons modified gravity is an effective extension of general relativity that captures leading-order, gravitational parity violation. Such an effective theory is motivated by anomaly cancelation in particle physics and string theory. In this review, we begin by providing a pedagogical derivation of the three distinct ways such an extension arises: (1) in particle physics, (2) from string theory and (3) geometrically. We then review many exact and approximate vacuum solutions of the modified theory, and discuss possible matter couplings. Following this, we review the myriad astrophysical, solar system, gravitational wave and cosmological probes that bound Chern–Simons modified gravity, including discussions of cosmic baryon asymmetry and inflation. The review closes with a discussion of possible future directions in which to test and study gravitational parity violation.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/a9b18c73809f5695980d576c9b98871643df7056

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Carlos A. R. Herdeiro
2. Kent Yagi
3. N. Yunes
4. H. R'unarsson
5. Eugen Radu
6. K. Landsteiner
7. E. Kovetz
8. Y. Miao

In Nuclear and High Energy Physics

1. Carlos A. R. Herdeiro
2. Kent Yagi
3. H. R'unarsson
4. Eugen Radu
5. N. Yunes
6. K. Landsteiner
7. E. Kovetz
8. Y. Miao

In Statistical and Nonlinear Physics

1. Kent Yagi
2. Carlos A. R. Herdeiro
3. Hao Yang
4. Yang Guo
5. Chen Lan
6. Y. Miao
7. Luis Melgar
8. N. Yunes

Citations in the corpus

• Holographic gravitational anomaly and chiral vortical effect (2011, background): “7) Gravity in four dimensions augmented by a similar term with a scalar field instead of a vector field has attracted much interest recently [60] (see also the review [61]).”
• Regular Black Holes: A Short Topic Review (2023, methodology): “Taking a RBHmodel in the Chern-Simons gravity [217] as an example, theNJA can provide a rotatingmetric, but the Pontryagin density, ∗RR, does not vanish [218], which means that the constructed metric will not satisfy equations of motion.”
• Kerr black holes with Proca hair (2016, background): “g [35–42]); or 6) several of the above.”