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12 papers · 1 filter
PT-Symmetric Cubic Anharmonic Oscillator as a Physical Model
Ali Mostafazadeh
We perform a perturbative calculation of the physical observables, in particular pseudo-Hermitian position and momentum operators, the equivalent Hermitian Hamiltonian operator, an…
A scale-free network hidden in the collapsing polymer
A. Kabakcioglu, A. L. Stella
We show that the collapsed globular phase of a polymer accommodates a scale-free incompatibility graph of its contacts. The degree distribution of this network is found to decay wi…
Physical Aspects of Pseudo-Hermitian and -Symmetric Quantum Mechanics
Ali Mostafazadeh, Ahmet Batal
For a non-Hermitian Hamiltonian H possessing a real spectrum, we introduce a canonical orthonormal basis in which a previously introduced unitary mapping of H to a Hermitian Hamilt…
PT-Symmetric Quantum Mechanics: A Precise and Consistent Formulation
Ali Mostafazadeh
The physical condition that the expectation values of physical observables are real quantities is used to give a precise formulation of PT-symmetric quantum mechanics. A mathematic…
Dualisation of the Salam-Sezgin D=8 Supergravity
Tekin Dereli, Nejat Tevfik Yilmaz
The first-order formulation of the Salam-Sezgin D=8 supergravity coupled to N vector multiplets is discussed. The non-linear realization of the bosonic sector of the D=8 matter cou…
Electromagnetically induced left-handedness in a dense gas of three level atoms
M. O. Oktel, Ö. E. Müstecaplıoğlu
We discuss how a three level system can be used to change the frequency dependent magnetic permeability of an atomic gas to be significantly different from one. We derive the condi…