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Arxiv.org
by Alina Czajka; Stanislaw Mrowczynski
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The N=4 super Yang-Mills plasma is studied in the regime of weak coupling. Collective excitations and collisional processes are discussed. Since the Keldysh-Schwinger approach is used, the collective excitations in both equilibrium and non-equilibrium plasma are under consideration. The dispersion equations of gluon, fermion, and scalar modes are written down and the self-energies, which enter the equations, are computed in the Hard Loop Approximation. The self-energies are discussed in the...
Source: http://arxiv.org/abs/1203.1856v3
Raman spectroscopic study of amorphous carbon layers for two different excitation wavelengths at room temperature. The amount of sp3 bondings is estimated to about 10% for both samples, evaluated from the ratio of the D- and G-Raman line intensities. The properties of the bondings in the two samples are discussed. Raman-spektroskopische Untersuchungen von amorphen Kohlenstoffschichten fuer zwei unterschiedliche Anregungswellenlaengen bei Raumtemperatur. Der sp3-Bindungsanteil is zu 10% fuer...
Source: http://arxiv.org/abs/1203.0035v1
Arxiv.org
by Ajay Ramadoss; Xiang Tang; Hsian-hua Tseng
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We introduce a notion of Hochschild Lefschetz class for a good coherent D-module on a compact complex manifold, and prove that this class is compatible with the direct image functor. We prove an orbifold Riemann-Roch formula for a D-module on a compact complex orbifold.
Source: http://arxiv.org/abs/1203.6885v2
Arxiv.org
by Mario Bessa; Celia Ferreira; Jorge Rocha
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In this paper we contribute to the generic theory of Hamiltonians by proving that there is a C2-residual R in the set of C2 Hamiltonians on a closed symplectic manifold M, such that, for any H in R, there is an open and dense set S(H) in H(M) such that, for every e in S(H), the Hamiltonian level (H,e) is topologically mixing.
Source: http://arxiv.org/abs/1203.3849v1