INDEPSO-ISPSM consensus on peritoneal malignancies - Enhanced recovery after surgery in cytoreductive surgery (CRS) with/without hyperthermic intraperitoneal chemotherapy (HIPEC).

Background: The role of enhanced recovery after surgery (ERAS) in cytoreductive surgery and/or Hyperthermic Intraperitoneal Chemotherapy HIPEC) is evolving, with promising results that improve patient outcomes. This consensus exercise was carried out to address and standardize components of the ERAS protocol pertinent to the Indian context.

Method: The modified Delphi method was employed with two rounds of voting.

Quantum Rényi relative entropies affirm universality of thermodynamics.

We formulate a complete theory of quantum thermodynamics in the Rényi entropic formalism exploiting the Rényi relative entropies, starting from the maximum entropy principle. In establishing the first and second laws of quantum thermodynamics, we have correctly identified accessible work and heat exchange in both equilibrium and nonequilibrium cases. The free energy (internal energy minus temperature times entropy) remains unaltered, when all the entities entering this relation are suitably defined.

Dynamical evolution of quantum oscillators toward equilibrium.

A pure quantum state of large number N of oscillators, interacting via harmonic coupling, evolves such that any small subsystem n< View Article and Find Full Text PDF

Generalized information theoretic measure to discern the quantumness of correlations.

A novel measure, quantumness of correlations Q_AB is introduced here for bipartite states, by incorporating the required measurement scheme crucial in defining any such quantity. Quantumness coincides with the previously proposed measures in special cases and it vanishes for separable states--a feature not captured by the measures proposed earlier. It is found that an optimal generalized measurement on one of the parts leaves the overall state in its closest separable form, which shares the same marginal for the other part, implying that Q_AB is nonzero for all entangled bipartite states and it serves as an upper bound to the relative entropy of entanglement.

Positive-operator-valued-measure view of the ensemble approach to polarization optics.

The statistical ensemble formalism of Kim et al [J. Opt. Soc.

Characterizing multiparticle entanglement in symmetric N-qubit states via negativity of covariance matrices.

We show that higher order intergroup covariances involving even number of qubits are necessarily positive semidefinite for N-qubit separable states, which are completely symmetric under permutations of the qubits. This identification leads to a family of sufficient conditions of inseparability based on the negativity of 2kth order intergroup covariance matrices (2k View Article and Find Full Text PDF

Validity of the second law in nonextensive quantum thermodynamics.

The second law of thermodynamics in nonextensive statistical mechanics is discussed in the quantum regime. Making use of the convexity property of the generalized relative entropy associated with the Tsallis entropy indexed by q, Clausius' inequality is shown to hold in the range q in (0, 2]. This restriction on the range of the entropic index, q, is purely quantum mechanical and there exists no upper bound of q for validity of the second law in classical theory.