Results 21 to 30 of about 37,061 (263)

CANONICAL APPROACH TO 2D INDUCED GRAVITY [PDF]

Modern Physics Letters A, 2001
Using canonical method the Liouville theory has been obtained as a gravitational Wess–Zumino action of the Polyakov string. From this approach it is clear that the form of the Liouville action is the consequence of the bosonic representation of the Virasoro algebra, and that the coefficient in front of the action is proportional to the central charge ...
Popovic, D. S., Sazdovic, B.
openaire   +2 more sources

Softening transitions with quenched 2D gravity [PDF]

Nuclear Physics B - Proceedings Supplements, 1997
We perform extensive Monte Carlo simulations of the 10-state Potts model on quenched two-dimensional $ ^3$ gravity graphs to study the effect of quenched connectivity disorder on the phase transition, which is strongly first order on regular lattices.
Baillie, C. F., Janke, W., Johnston, D. A.   +2 more
openaire   +2 more sources

Gravity dual of two-dimensional N $$ \mathcal{N} $$ = (2, 2)∗ supersymmetric Yang-Mills theory and integrable models

Journal of High Energy Physics, 2018
The 2D N $$ \mathcal{N} $$ = (2, 2)∗ supersymmetric Yang-Mills theory can be obtained from the 2D N $$ \mathcal{N} $$ = (4, 4) theory with a twisted mass deformation.
Jun Nian
doaj   +1 more source

Effective gravitational action for 2D massive fermions

Journal of High Energy Physics, 2021
We work out the effective gravitational action for 2D massive Euclidean fermions in a small mass expansion. Besides the leading Liouville action, the order m 2 gravitational action contains a piece characteristic of the Mabuchi action, much as for 2D ...
Adel Bilal, Corinne de Lacroix, Harold Erbin   +2 more
doaj   +1 more source

EXTENSIONS OF 2D GRAVITY [PDF]

International Journal of Modern Physics D, 1994
After reviewing some aspects of gravity in two dimensions, I show that non-trivial embeddings of sl(2) in a semi-simple (super) Lie algebra give rise to a very large class of extensions of 2D gravity. The induced action is constructed as a gauged WZW model and an exact expression for the effective action is given.
openaire   +3 more sources

Lessons of quantum 2D dilaton gravity [PDF]

Physics Letters B, 1995
13 pages ...
de Alwis, S. P., MacIntire, D. A.
openaire   +2 more sources

The two-sphere partition function from timelike Liouville theory at three-loop order

Journal of High Energy Physics, 2022
While the Euclidean two-dimensional gravitational path integral is in general highly fluctuating, it admits a semiclassical two-sphere saddle if coupled to a matter CFT with large and positive central charge. In Weyl gauge this gravity theory is known as
Beatrix Mühlmann
doaj   +1 more source

Relational observables in 2D quantum gravity [PDF]

Physical Review D, 2007
Local observation is an important problem both for the foundations of a quantum theory of gravity and for applications to quantum-cosmological problems such as eternal inflation. While gauge invariant local observables can't be defined, it has been argued that appropriate relational observables approximately reduce to local observables in certain ...
Gary, Michael, Giddings, Steven B.
openaire   +2 more sources

The two-sphere partition function in two-dimensional quantum gravity

Journal of High Energy Physics, 2021
We study the Euclidean path integral of two-dimensional quantum gravity with positive cosmological constant coupled to conformal matter with large and positive central charge.
Dionysios Anninos, Teresa Bautista, Beatrix Mühlmann   +2 more
doaj   +1 more source

Towards unified theory of 2d gravity [PDF]

Nuclear Physics B, 1992
67 pages (October 1991)
Kharchev, S., Marshakov, A., Mironov, A., Morozov, A., Zabrodin, A.   +4 more
openaire   +2 more sources