scholarly journals Black holes and two-dimensional dilaton gravity

1998 ◽  
Vol 57 (2) ◽  
pp. 1129-1135 ◽  
Author(s):  
T. Futamase ◽  
M. Hotta ◽  
Y. Itoh
Keyword(s):  
Black Holes ◽  
Two Dimensional ◽  
Dilaton Gravity

scholarly journals TWO-DIMENSIONAL DESCRIPTION OF D-DIMENSIONAL STATIC BLACK HOLES WITH POINTLIKE SOURCES

2005 ◽  
Vol 20 (38) ◽  
pp. 2919-2924 ◽  
Author(s):  
MARIANO CADONI ◽  
SALVATORE MIGNEMI
Keyword(s):  
Black Holes ◽  
Gravity Model ◽  
2D Gravity ◽  
Two Dimensional ◽  
Dilaton Gravity

We derive two-dimensional (2D) solutions of a generic dilaton gravity model coupled with matter, which describe D-dimensional static black holes with pointlike sources. The equality between the mass M of the D-dimensional gravitational solution and the mass m of the source can also be preserved at the level of the 2D gravity model.

scholarly journals WEYL INVARIANCE AND SPURIOUS BLACK HOLES IN TWO-DIMENSIONAL DILATON GRAVITY

1994 ◽  
Vol 09 (27) ◽  
pp. 4811-4835 ◽  
Author(s):  
TAKANORI FUJIWARA ◽  
YUJI IGARASHI ◽  
JISUKE KUBO
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Hawking Radiation ◽  
Gravity Models ◽  
Conformal Anomaly ◽  
Quantum Level ◽  
Two Dimensional ◽  
Dilaton Gravity ◽  
Matter Coupling ◽  
Weyl Invariance

In two-dimensional dilaton gravity theories, there may exist a global Weyl invariance which makes the black hole spurious. If the global invariance and the local Weyl invariance of the matter coupling are intact at the quantum level, there is no Hawking radiation. We explicitly verify the absence of anomalies in these symmetries for the model proposed by Callan, Giddings, Harvey and Strominger. The crucial observation is that the conformal anomaly can be cohomologically trivial and so not truly anomalous in such dilaton gravity models.

scholarly journals DUALITIES OF LORENTZIAN AND EUCLIDEAN BLACK HOLES IN TWO-DIMENSIONAL STRING GENERATED MODELS

1995 ◽  
Vol 10 (05) ◽  
pp. 367-378 ◽  
Author(s):  
M. CADONI ◽  
S. MIGNEMI
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Heterotic String ◽  
Two Dimensional ◽  
Dilaton Gravity ◽  
String Models ◽  
Black Hole Solutions

We discuss the properties of Lorentzian and Euclidean black hole solutions of a generalized two-dimensional dilaton gravity action containing a modulus field, which arises from the compactification of heterotic string models. The duality symmetries of these solutions are also investigated.

scholarly journals Flat space holography in spin-2 extended dilaton-gravity

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Hamid Afshar ◽  
Erfan Esmaeili ◽  
H. R. Safari
Keyword(s):  
Black Holes ◽  
Gauge Theory ◽  
Central Element ◽  
Flat Space ◽  
Two Dimensional ◽  
Dilaton Gravity ◽  
Asymptotic Symmetry ◽  
Coadjoint Action ◽  
Flat Spacetime ◽  
Thermodynamics Of Black Holes

Abstract We present an interacting spin-2 gauge theory coupled to the two-dimensional dilaton-gravity in flat spacetime. The asymptotic symmetry group is enhanced to the central extension of Diff(S1)⋉C∞(S1)⋉Vec(S1) when the central element of the Heisenberg subgroup is zero (vanishing U(1) level). Using the BF-formulation of the model we derive the corresponding boundary coadjoint action which is the spin-2 extension of the warped Schwarzian theory at vanishing U(1) level. We also discuss the thermodynamics of black holes in this model.

Erratum: Black holes of a general two-dimensional dilaton gravity theory

1995 ◽  
Vol 51 (10) ◽  
pp. 5967-5968 ◽  
Author(s):  
José P. S. Lemos ◽  
Paulo M. Sá
Keyword(s):  
Black Holes ◽  
Gravity Theory ◽  
Two Dimensional ◽  
Dilaton Gravity

scholarly journals ENTROPY SPECTRA OF SINGLE HORIZON BLACK HOLES IN TWO DIMENSIONS

2011 ◽  
Vol 20 (13) ◽  
pp. 2525-2542 ◽  
Author(s):  
A. LÓPEZ-ORTEGA
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Two Dimensions ◽  
Two Dimensional ◽  
Dilaton Gravity ◽  
Asymptotically Flat

The Hod conjecture proposes that the asymptotic quasinormal frequencies determine the entropy quantum of a black hole. Considering the Maggiore modification of this conjecture, we calculate the entropy spectra of general, single horizon, asymptotically flat black holes in two-dimensional dilaton gravity. We also compute the entropy quanta of the two-dimensional Witten and AdS2 black holes. Using the results for the entropy quanta of these two-dimensional black holes, we discuss whether the produced values are generic. Finally we extend the results on the entropy spectra of other black holes.

scholarly journals Black holes of a general two-dimensional dilaton gravity theory

1994 ◽  
Vol 49 (6) ◽  
pp. 2897-2908 ◽  
Author(s):  
José P. S. Lemos ◽  
Paulo M. Sá
Keyword(s):  
Black Holes ◽  
Gravity Theory ◽  
Two Dimensional ◽  
Dilaton Gravity
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