Sustainable development is the latest concept in a long series of conceptual innovations aimed to bring a space of dream to our harsh reality due to economic growth. This inflation of adjectives added to the developme...Sustainable development is the latest concept in a long series of conceptual innovations aimed to bring a space of dream to our harsh reality due to economic growth. This inflation of adjectives added to the development, like sustainable, viable, etc., is an attempt to blur our eyes about its negative effects; it is like a magic conjuration. When we look at all its implications, we are so far. There are reasons to be pessimistic： The paths that this concept will lead us to are not clear. In the sustainable development concept, we find only a new packing to our harsh reality： a matter of marketing. Sustainable development was presented as a ＂solution＂ to our innumerable recent problems; on the contrary, it may be a problem to solve. Shouldn＇t this concept be seriously questioned and maybe condemned？ Assuming no drastic measure taken to control earth problems, by the year 2032, 70% of the planet will be destroyed. Sustainable development is a rhetorical ploy which seeks to reconcile what is irreconcilable： the environment and the development. A policy which is not carefully enough thought will carry along various perverse and adverse effects for the ecology as much as for the economy.展开更多
By virtue of the technique of integration within an ordered product of operators we present a new approach to obtain operators' normal ordering. We first put operators into their Weyl ordering through the Weyl-Wig...By virtue of the technique of integration within an ordered product of operators we present a new approach to obtain operators' normal ordering. We first put operators into their Weyl ordering through the Weyl-Wigner quantization scheme, and then we convert the Weyl ordered operators into normal ordering by virtue of the normally ordered form of the Wigner operator.展开更多
In quantum mechanics theory one of the basic operator orderings is Q-P and P-Q ordering,where Q and P are the coordinate operator and the momentum operator,respectively.We derive some new fundamental operator identiti...In quantum mechanics theory one of the basic operator orderings is Q-P and P-Q ordering,where Q and P are the coordinate operator and the momentum operator,respectively.We derive some new fundamental operator identities about their mutual reordering.The technique of integration within Q-P ordering and P-Q ordering is introduced.The Q-P ordered and P-Q ordered formulas of the Wigner operator are also deduced which makes arranging the operators in either Q-P or P-Q ordering much more convenient.展开更多
We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering oper...We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering operator expansion, which is elegant in form and has many applications in deriving new operator identities. This demonstrates that Dirac's symbolic method can be merged into Newton-Leibniz integration theory in a broad way.展开更多
文摘Sustainable development is the latest concept in a long series of conceptual innovations aimed to bring a space of dream to our harsh reality due to economic growth. This inflation of adjectives added to the development, like sustainable, viable, etc., is an attempt to blur our eyes about its negative effects; it is like a magic conjuration. When we look at all its implications, we are so far. There are reasons to be pessimistic： The paths that this concept will lead us to are not clear. In the sustainable development concept, we find only a new packing to our harsh reality： a matter of marketing. Sustainable development was presented as a ＂solution＂ to our innumerable recent problems; on the contrary, it may be a problem to solve. Shouldn＇t this concept be seriously questioned and maybe condemned？ Assuming no drastic measure taken to control earth problems, by the year 2032, 70% of the planet will be destroyed. Sustainable development is a rhetorical ploy which seeks to reconcile what is irreconcilable： the environment and the development. A policy which is not carefully enough thought will carry along various perverse and adverse effects for the ecology as much as for the economy.
基金supported by the National Natural Science Foundation of China (Grant Nos. 10775097 and 10947017/A05)the Specialized Research Fund for the Doctorial Progress of Higher Education of China (GrantNo. 20070358009)
文摘By virtue of the technique of integration within an ordered product of operators we present a new approach to obtain operators' normal ordering. We first put operators into their Weyl ordering through the Weyl-Wigner quantization scheme, and then we convert the Weyl ordered operators into normal ordering by virtue of the normally ordered form of the Wigner operator.
基金supported by the National Natural Science Foundation of China (Grant No.11175113)
文摘In quantum mechanics theory one of the basic operator orderings is Q-P and P-Q ordering,where Q and P are the coordinate operator and the momentum operator,respectively.We derive some new fundamental operator identities about their mutual reordering.The technique of integration within Q-P ordering and P-Q ordering is introduced.The Q-P ordered and P-Q ordered formulas of the Wigner operator are also deduced which makes arranging the operators in either Q-P or P-Q ordering much more convenient.
基金supported by the National Natural Science Foundation of China (Grant Nos.10775097 and 10874174)the Special Funds of the National Natural Science Foundation of China (Grant No.10947017/A05)+1 种基金the Higher School Fund of Outstanding Young Talent (Grant No.2010SQRL132)the Scientific Research Starting Foundation of Chizhou University (Grant No.2010RC036)
文摘We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering operator expansion, which is elegant in form and has many applications in deriving new operator identities. This demonstrates that Dirac's symbolic method can be merged into Newton-Leibniz integration theory in a broad way.
