WormHole

Sofia Relativity Group

"St. Kliment Ohridski" University of Sofia

"Never underestimate the power of the dark side.", Yoda    

Some recent publications:

2012
 
Peter I. Slavov and Stoytcho S. Yazadjiev, "Hawking radiation of asymptotically non-flat dyonic black holes in Einstein-Maxwell-dilaton gravity ", arXiv:1203.6309 [gr-qc]
Stoytcho S. Yazadjiev and Daniela D. Doneva, " Gravitational wave spectrum of anisotropic neutron stars in Cowling approximation", Accepted in Phys. Rev. D, arXiv:1203.3963 [gr-qc]
Stoytcho S. Yazadjiev and Daniela D. Doneva, " Possible dark energy imprints in gravitational wave spectrum of mixed neutron-dark-energy stars", JCAP 03, 037 (2012), arXiv:1112.4375 [gr-qc]
Petya G. Nedkova and Stoytcho S. Yazadjiev, "Magnetized black hole on the Taub-NUT instanton" Phys. Rev. D85, 064021 (2012), arXiv:1112.3326 [hep-th]
 
2011
 
Stoytcho S. Yazadjiev, "Relativistic models of magnetars: Nonperturbative analytical approach", Phys. Rev. D85, 044030 (2012), arXiv:1111.3536 [hep-th]
P. Nedkova and Stoytcho S. Yazadjiev, "On the Thermodynamics of 5D Black Holes on ALF Gravitational Instantons", Phys. Rev. D84, 124040 (2011), arXiv:1109.2838 [hep-th]
Daniela D. Doneva, Kostas D. Kokkotas, Ivan Zh. Stefanov and Stoytcho S. Yazadjiev, "Time Evolution of the Radial Perturbations and Linear Stability of Solitons and Black Holes in a Generalized Skyrme Model", Phys. Rev. D84 084021 (2011), arXiv:1107.5424 [gr-qc]
Stoytcho S. Yazadjiev, " Exact dark energy star solutions", Phys. Rev. D83, 127501 (2011), arXiv:1104.1865 [gr-qc]
Stoytcho S. Yazadjiev, "Uniqueness and nonuniqueness of the stationary black holes in 5D Einstein-Maxwell and Einstein-Maxwell-dilaton gravity", JHEP 1106, 083 (2011), arXiv:1104.0378 [hep-th]
Daniela D. Doneva, Ivan Zh. Stefanov and Stoytcho S. Yazadjiev, "Solitons and Black Holes in a Generalized Skyrme Model with Dilaton-Quarkonium field", Phys. Rev. D83, 124007 (2011), arXiv:1102.4863 [gr-qc]
 
2010
 
Paul D. Lasky and Daniela D. Doneva, "Stability and quasinormal modes of black holes in tensor-vector-scalar theory: Scalar field perturbations", Phys. Rev D82, 124068 (2010), arXiv:1011.0747 [gr-qc]
Stoytcho S. Yazadjiev, "A classification (uniqueness) theorem for rotating black holes in 4D Einstein-Maxwell-dilaton theory", Phys. Rev D82, 124050 (2010), arXiv:1009.2442 [hep-th]
Daniela D. Doneva, Stoytcho S. Yazadjiev, Kostas D. Kokkotas and Ivan Zh. Stefanov, "Quasi-normal modes, bifurcations and non-uniqueness of charged scalar-tensor black holes", Phys. Rev D 82, 064030 (2010), arXiv:1007.1767 [gr-qc]
P. Nedkova and Stoytcho S. Yazadjiev, “Rotating black ring on Kaluza-Klein bubbles”, Phys. Rev. D82, 044010 (2010), arXiv:1005.5051 [hep-th].
Ivan Zh. Stefanov, Stoytcho S. Yazadjiev and Galin Galin N. Gyulchev, “Connection between black-hole quasinormal modes and lensing in the strong deflection limit”, Phys. Rev. Lett. 104, 251103 (2010), arXiv:1003.1609 [gr-qc]
Stoytcho S. Yazadjiev, “A Uniqueness theorem for black holes with Kaluza-Klein asymptotic in 5D Einstein-Maxwell gravity”, Phys. Rev. D82, 024015 (2010), arXiv:1002.3954 [hep-th].
Daniela D. Doneva, Stoytcho S. Yazadjiev, Kostas D. Kokkotas, Ivan Zh. Stefanov, Michail D. Todorov, “Charged anti-de Sitter scalar-tensor black holes and their thermodynamic phase structure”, Phys. Rev. D 81, 104030 (2010), arXiv:1001.3569 [gr-qc].
 
2009
 
Stoytcho S. Yazadjiev, Petia G. Nedkova, “Sequences of dipole black rings and Kaluza-Klein bubbles”, JHEP 01, 048 (2010), arXiv:0910.0938 [hep-th].
Galin N. Gyulchev, Stoytcho S. Yazadjiev, “Analytical Kerr-Sen Dilaton-Axion Black Hole Lensing in the Weak Deflection Limit”, Phys. Rev. D81, 023005 (2010), arXiv:0909.3014 [gr-qc] .
Ivan Zh. Stefanov, Stoytcho S. Yazadjiev, Daniela A. Georgieva, Michail D. Todorov, “Born-Infeld black holes coupled to a massive scalar field”, submitted to a journal, arXiv:0909.0196 [gr-qc].
Stoytcho S. Yazadjiev, Petia G. Nedkova, “Magnetized configurations with black holes and Kaluza-Klein bubbles: Smarr-like relations and first law”, Phys. Rev. D80, 024005(2009), arXiv:0904.3605 [hep-th].
 
2008
 
Stefan Hollands, Stoytcho Yazadjiev, “A uniqueness theorem for stationary Kaluza-Klein black holes”, Comm. Math. Phys. 302 , 631 (2011), arXiv:0812.3036 [gr-qc].
J. Kunz and Stoytcho S. Yazadjiev, "Charged black holes on a Kaluza-Klein bubble", Phys. Rev. D79, 024010 (2009), arXiv:0811.0730 [hep-th]
Galin N. Gyulchev and Stoytcho S. Yazadjiev, "Gravitational Lensing by Rotating Naked Singularities", Phys. Rev. D78 (2008), 083004 (2008), arXiv:0806.3289 [gr-qc]
Stoytcho S. Yazadjiev, "5D Einstein-Maxwell solitons and concentric rotating dipole black rings", Phys. Rev. D78, 064032 (2008), arXiv:0805.1600 [hep-th]
Stoytcho S. Yazadjiev, "Magnetized static black Saturn", Phys. Rev. D77, 127501 (2008), arXiv:0802.0784 [hep-th]
 
2007
 
S. Hollands and Stoytcho S. Yazadjiev, "A Uniqueness theorem for 5-dimensional Einstein-Maxwell black holes", Class. Quant. Grav. 25, 095010 (2008), arXiv:0711.1722 [gr-qc]
Ivan Zh. Stefanov, Stoytcho S. Yazadjiev and M. Todorov, "Phases of 4D Scalar-tensor black holes coupled to Born-Infeld nonlinear electrodynamics", Mod. Phys. Lett. A 23, 2915 (2008), arXiv:0708.4141 [gr-qc]
Ivan Zh. Stefanov, Stoytcho S. Yazadjiev and M. Todorov, "Scalar-tensor black holes coupled to Euler-Heisenberg nonlinear electrodynamics", Mod. Phys. Lett. A 22, 1217 (2007), arXiv:0708.3203 [gr-qc]
S. Hollands and Stoytcho S. Yazadjiev, "Uniqueness theorem for 5-dimensional black holes with two axial Killing fields", Commun. Math. Phys. 283, 749 (2008), arXiv:0707.2775 [gr-qc]
Stoytcho S. Yazadjiev, "Black Saturn with dipole ring", Phys. Rev. D76, 064011 (2007), arXiv:0705.1840 [hep-th]
Ivan Zh. Stefanov, Stoytcho S. Yazadjiev and M. Todorov, "Scalar-tensor black holes coupled to Born-Infeld nonlinear electrodynamics", Phys. Rev. D75, 084036 (2007), arXiv:0704.3784 [gr-qc]