No triangles on the moduli space of maximally supersymmetric gauge theory

Maximally supersymmetric gauge theory in four dimensions has a remarkably simple S-matrix at the origin of its moduli space at both tree and loop level. This leads to the question what, if any, of this structure survives at the complement of this one point. Here this question is studied in detail at one loop for the branch of the moduli space parameterized by a vacuum expectation value for one complex scalar. Motivated by the parallel D-brane picture of spontaneous symmetry breaking a simple relation is demonstrated between the Lagrangian of broken super Yang-Mills theory and that of its higher dimensional unbroken cousin. Using this relation it is proven both through an on- as well as an off-shell method there are no so-called triangle coefficients in the natural basis of one-loop functions at any finite point of the moduli space for the theory under study. The off-shell method yields in addition absence of rational terms in a class of theories on the Coulomb branch which includes the special case of maximal supersymmetry. The results in this article provide direct field theory evidence for a recently proposed exact dual conformal symmetry motivated by the AdS/CFT correspondence.Comment: 39 pages, 4 figure

Biological therapy of cancer

Interferons and monoclonal antibodies are among the most promising biological approaches to cancer treatment which have so far been investigated. Both natural and recombinant interferon-alpha preparations have shown activity in a number of trials in hematologic malignancies, even in previously treated patients; activity in solid tumors, however, has been limited. Unconjugated monoclonal antibodies have been safely administered in several small trials and have had therapeutic value on occasion. In spite of a number of remaining problems and questions, monoclonal antibodies and their conjugates seem likely to find a number of distinct roles in cancer treatment; elimination of micrometastases and purging of bone marrow for grafting may be among these roles.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/44207/1/10549_2005_Article_BF01886730.pd

Transmission of returns and volatility in art markets: a multivariate GARCH analysis

This study examines the transmission of returns and volatility among eight major art markets. The art indices included in the analysis are Contemporary Masters (CM), 20th Century English (TE), 19th Century European (NE), French Impressionist (FI), Modern European (ME), Modern US Paintings (US), Old Masters (OM) and Surrealists (SR). A multivariate generalized autoregressive conditional heteroscedasticity (MGARCH) model is used to identify the source and magnitude of spillovers. The results indicate the presence of large and predominantly positive mean return and volatility spillovers, though the spillovers between art markets are not homogeneous.

Old master paintings, export veto and price formation: an empirical study

Old Masters Paintings, Hedonic pricing analysis, Export veto, C1, K0, Z11,

The changing political economy of pension fund accounting regulation: a comparative study of four Anglo-American countries

This article examines the inter-relationships between changes in the political economy of pensions law and changes in pension accounting regulation in four Anglo-American countries. A four-fold property rights framework is developed that identifies the common inequities in the ownership of pension deficits and surpluses. Deficiencies are identified relating to various issues concerning the recognition, measurement and disclosure of pension fund surpluses or deficits. These aspects include inequality in pension provision, the capture of pension regulation through delegation to narrow professional bodies, the corporatisation of pension accounting language and discourse, and the general opaqueness and dimunition of public pension regulations. Until the 1970s, pensions were generally seen as being a paternalistic social security and pension funds were relatively unregulated. However, the social and economic consequences of ageing populations on the financing of public pensions has brought about a new emphasis on professionally developed accounting standards as a primary means of regulating the accountability of pension funds