Giving an Account of Oneself: Architecturally

In January 2013, I questioned the decision of my employer, UCL, to accept $10 million of funding from the Anglo-Australian multinational mining and petroleum company BHP Billiton to create an International Energy Policy Institute in Adelaide, and the Institute for Sustainable Resources in London at the Bartlett Faculty of the Built Environment. At the time, I was Vice Dean of Research and my questions started a process which is figured here as a site-writing, articulated through two registers: bios – a set of diary entries noting personal anxieties and hopes related to my institutional role at UCL, and logos – an attempt to relate these issues to the development of my own intellectual work and concepts concerning ethics and critique generated by others

Dissipative quantum theory: Implications for quantum entanglement

Three inter-related topics are discussed here. One, the Lindblad dynamics of quantum dissipative systems; two, quantum entanglement in composite systems and its quantification based on the Tsallis entropy; and three, robustness of entanglement under dissipation. After a brief review of the Lindblad theory of quantum dissipative systems and the idea of quantum entanglement in composite quantum systems illustrated by describing the three particle systems, the behavior of entanglement under the influence of dissipative processes is discussed. These issues are of importance in the discussion of quantum nanometric systems of current research.Comment: 12 pages, 1 Tabl

The structures, binding energies and vibrational frequencies of Ca3 and Ca4: An application of the CCSD(T) method

The Ca3 and Ca4 metallic clusters have been investigated using state-of-the-art ab initio quantum mechanical methods. Large atomic natural orbital basis sets have been used in conjunction with the singles and doubles coupled-cluster (CCSD) method, a coupled-cluster method that includes a perturbational estimate of connected triple excitations, denoted CCSD(T), and the multireference configuration interaction (MRCI) method. The equilibrium geometries, binding energies and harmonic vibrational frequencies have been determined with each of the methods so that the accuracy of the coupled-cluster methods may be assessed. Since the CCSD(T) method reproduces the MRCI results very well, cubic and quartic force fields of Ca3 and Ca4 have been determined using this approach and used to evaluate the fundamental vibrational frequencies. The infrared intensities of both the e' mode of Ca3 and the t2 mode of Ca4 are found to be small. The results obtained in this study are compared and contrasted with those from our earlier studies on small Be and Mg clusters