37 citations
- Universidade Federal FluminenseBR3 papers
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- The Abdus Salam International Centre for Theoretical Physics (ICTP)IT1 paper
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Showing 2012Show all
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quant-ph2012★ 10 cited
Unitary Invariants and Classification of Four-Qubit States via Negativity Fonts
S. Shelly Sharma, N. K. Sharma
Local unitary invariance and the notion of negativity fonts are used as the principle tools to construct four qubit invariants of degree 8, 12, and 24. A degree 8 polynomial invari…
quant-ph2012★ 15 cited
Classification of Multipartite Entanglement via Negativity Fonts
S. Shelly Sharma, N. K. Sharma
Partial transposition of state operator is a well known tool to detect quantum correlations between two parts of a composite system. In this letter, the global partial transpose (G…
astro-ph.CO2012★ 16 cited
Inflationary Perturbations in Anisotropic, Shear-Free Universes
Thiago S. Pereira, Saulo Carneiro, Guillermo A. Mena Marugan
In this work, the linear and gauge-invariant theory of cosmological perturbations in a class of anisotropic and shear-free spacetimes is developed. After constructing an explicit s…