Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Angilella, G. G. N."'
The phase structure of a higher derivative sine-Gordon model in four dimensions is analysed. It is shown that the inclusion of a relevant two-derivative term in the action significantly modifies some of the results obtained by neglecting this operato
Externí odkaz:
http://arxiv.org/abs/2407.18794
Autor:
Naselli, Gabriele, Könye, Viktor, Das, Sanjib Kumar, Angilella, G. G. N., Isaeva, Anna, Brink, Jeroen van den, Fulga, Cosma
Lattice defects such as stacking faults may obscure electronic topological features of real materials. In fact, defects are a source of disorder that can enhance the density of states and conductivity of the bulk of the system and they break crystal
Externí odkaz:
http://arxiv.org/abs/2206.06765
Publikováno v:
Int. J. Mod. Phys. B 28, 1430019 (2014)
Three solvable models are set out in some detail in reviewing different types of phase transitions. Two of these relate directly to emergent critical phenomena, viz. melting and magnetic transitions in heavy rare-earth metals, and secondly, via the $
Externí odkaz:
http://arxiv.org/abs/1411.0219
Publikováno v:
Chem. Phys. Lett. 608 (2014) 269
The Hartree-Fock (HF) method, supplemented by low-order Moller-Plesset (MP2) perturbation theory, has been utilized to predict the nuclear geometry, assuming planarity, of a low-lying isomer of the free space cluster BOSi$_2$. The planar structure fo
Externí odkaz:
http://arxiv.org/abs/1406.2772
Publikováno v:
Int. J. Mod. Phys. B 27 (2013) 133021
The review begins with a consideration of 3 forms of quantum information entropy associated with Shannon and Jaynes. For model two-electron spin compensated systems, some analytic progress is first reported. The Jaynes entropy is clearly related to c
Externí odkaz:
http://arxiv.org/abs/1310.4433
Publikováno v:
Phys. Lett. A 377 (2013) 801
After some introductory comments relating to antiferromagnetism of crystalline O_2, and brief remarks on the geometry of ozone, Hartree-Fock (HF) theory plus second-order Moller-Plesset (MP2) corrections are used to predict the nuclear structure of l
Externí odkaz:
http://arxiv.org/abs/1301.5830
Autor:
Grassi, A., Lombardo, G. M., Angilella, G. G. N., March, N. H., Pucci, R., Klein, D. J., Balaban, A. T.
Fingerprints of antiaromaticity in the negative ion (Li$_3$Al$_4$)$^-$, this species being realizable via a laser vaporization technique, are revealed by means of an \emph{ab initio} quantum-chemical investigation. First, the ground-state equilibrium
Externí odkaz:
http://arxiv.org/abs/1210.0121
Publikováno v:
J. Phys.: Conf. Ser. 377 (2012) 012083
Uniaxial strain is known to modify significantly the electronic properties of graphene, a carbon single layer of atomic width. Here, we study the effect of applied strain on the composite excitations arising from the coupling of charge carriers and p
Externí odkaz:
http://arxiv.org/abs/1206.2098
Publikováno v:
Phys. Rev. B 85 (2012) 195409
We study tunneling across a strain-induced superlattice in graphene. In studying the effect of applied strain on the low-lying Dirac-like spectrum, both a shift of the Dirac points in reciprocal space, and a deformation of the Dirac cones is explicit
Externí odkaz:
http://arxiv.org/abs/1203.4368