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20022026
most citedThe Raman Fingerprint of Graphene

15k citations

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Showing 2004 · cond-mat.otherShow all

5 papers · 2 filters

cond-mat.other2004

Noise estimation by use of neighboring distances in Takens space and its applications to stock market data

Krzysztof Urbanowicz, Janusz A. Holyst

We present a method that uses distances between nearest neighbors in Takens space to evaluate a level of noise. The method is valid even for high noise levels. The method has been…

cond-mat.other2004★ 8 cited

Classical and quantum radiation of perturbed discrete breathers

S. Flach, V. Fleurov, A. V. Gorbach

We show that the linearized phase space flow around a discrete breather solution is not capable of generating persistent energy flow away from the breather even in the case of inst…

cond-mat.other2004★ 25 cited

Ab initio Green's function formalism for band structures

Christian Buth, Uwe Birkenheuer, Martin Albrecht +1

Using the Green's function formalism, an ab initio theory for band structures of crystals is derived starting from the Hartree-Fock approximation. It is based on the algebraic diag…

cond-mat.other2004★ 19 cited

Basis set convergence in extended systems: infinite hydrogen fluoride and hydrogen chloride chains

Christian Buth, Beate Paulus

Basis set convergence of the Hartree-Fock and the correlation energy is examined for the hydrogen bonded infinite bent chains (HF)_infinity and (HCl)_infinity. We employ series of…

cond-mat.other2004★ 45 cited

Multireference configuration interaction treatment of excited-state electron correlation in periodic systems: the band structure of trans-polyacetylene

V. Bezugly, U. Birkenheuer

A systematic method to account for electron correlation in periodic systems which can predict quantitatively correct band structures of non-conducting solids from first principles…