نتایج جستجو برای: dimensional hole gas

تعداد نتایج: 685696  

2003
S. Carlip S. Vaidya

We investigate the thermodynamics of a four-dimensional charged black hole in a finite cavity in asymptotically flat and asymptotically de Sitter space. In each case, we find a Hawking-Page-like phase transition between a black hole and a thermal gas very much like the known transition in asymptotically anti-de Sitter space. For a " supercooled " black hole—a thermodynamically unstable black ho...

Journal: :Nepalese journal of ophthalmology : a biannual peer-reviewed academic journal of the Nepal Ophthalmic Society : NEPJOPH 2016
S Singh R Byanju S Pradhan G Lamichhane

INTRODUCTION Macular hole is a common and treatable cause of central visual loss. Classic macular hole surgery consists of vitrectomy, posterior vitreous cortex removal and intraocular gas tamponade, but during the past decade focus has especially been on internal limiting membrane (ILM) peeling as adjuvant therapy for increasing closure rates. OBJECTIVE To determine and evaluate anatomical a...

Journal: :Physical review letters 2012
Wei Yi Wei Zhang

We show that spin-orbit coupling (SOC) gives rise to pairing instability in a highly polarized two-dimensional Fermi gas for an arbitrary interaction strength. The pairing instability can lead to a Fulde-Ferrell-Larkin-Ovchinnikov-like molecular state, which undergoes a first-order transition into a pairing state with zero center-of-mass momentum as the parameters are tuned. These pairing state...

Journal: :Physical Review B 2021

The non-linear sigma model is a well-established theoretical tool for studies of transport and thermodynamics in disordered electronic systems. conventional approach interacting systems does not account particle-hole asymmetry. It therefore suited studying quantities that are sensitive to this effect such as the thermoelectric coefficient. Here, we derive minimal extension Keldysh tailored two-...

Journal: :Journal of Physics: Condensed Matter 2021

One-dimensional (1D) hole gas confined in a cylindrical Ge nanowire has potential applications quantum information technologies. Here, we analytically study the low-energy properties of this 1D gas. The subbands are two-fold degenerate. subband wave-functions obtained exactly, and degenerate pairs related to each other via combination time-reversal spin-rotation transformations. In evaluating e...

1999
A. C. Fabian

The mass density of massive black holes observed locally is consistent with the hard X-ray Background provided that most of the radiation produced during their growth was absorbed by surrounding gas. A simple model is proposed here for the formation of galaxy bulges and central black holes in which young spheroidal galaxies have a significant distributed component of cold dusty clouds which acc...

Journal: :Physical review. D, Particles and fields 1996
Frolov Israel Solodukhin

Quantum corrections are studied for a charged black hole in a two-dimensional model obtained by spherisymmetric reduction of the 4D Einstein-Maxwell theory. The classical (tree-level) thermodynamics is re-formulated in the framework of the off-shell approach, considering systems at arbitrary temperature. This implies a conical singularity at the horizon and modifies the gravitational action by ...

2009
Mubasher Jamil

In the classical relativistic regime, the accretion of phantom energy onto a black hole reduces the mass of the black hole. In this context, we have investigated the evolution of a Schwarzschild black hole in the standard model of cosmology using the phantom-like modified variable Chaplygin gas and the viscous generalized Chaplygin gas. The corresponding expressions for accretion time scale and...

1998
Hiroyuki Fukuda Keiichi Wada

In our previous paper, we have shown that a gas disk in the nuclear region of a barred galaxy which contains a central supermassive black hole (SMBH) rapidly evolves into a nuclear gas ring by the effect of an additional inner Lindblad resonance caused by the SMBH. In this paper, we investigate the fate of the gas ring, involving self-gravity of gas, using two-dimensional hydrodynamical simulat...

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