5,593 research outputs found
Generalized mirror symmetry and trace anomalies
We consider compactification of M-theory on X7 with betti numbers (b_0, b_1,
b_2, b_3, b_3, b_2, b_1, b_0) and define a generalized mirror symmetry (b_0,
b_1, b_2, b_3) goes to (b_0, b_1, b_2 -rho/2, b_3+rho/2)$ under which rho =
7b_0-5b_1+3b_2 -b_3 changes sign. Generalized self-mirror theories with rho=0
have massless sectors with vanishing trace anomaly (before dualization).
Examples include pure supergravity with N \geq 4 and supergravity plus matter
with N \leq 4.Comment: 19 pages late
Superqubits
We provide a supersymmetric generalization of n quantum bits by extending the
local operations and classical communication entanglement equivalence group
[SU(2)]^n to the supergroup [uOSp(1|2)]^n and the stochastic local operations
and classical communication equivalence group [SL(2,C)]^n to the supergroup
[OSp(1|2)]^n. We introduce the appropriate supersymmetric generalizations of
the conventional entanglement measures for the cases of and . In
particular, super-Greenberger-Horne-Zeilinger states are characterized by a
nonvanishing superhyperdeterminant.Comment: 16 pages, 4 figures, 4 tables, revtex; minor corrections, version
appearing in Phys. Rev.
Literary Sampling and the Poetics of the Specimen
Special issue on 'Sibylline Leaves'Special issue on 'Sibylline Leaves'Special issue on 'Sibylline Leaves'This article examines two types of literary specimen: a sample of typeset pages distributed with a prospectus to advertise a projected work, especially in subscription publishing; and a representative example of an author, genre or period published in an anthology, often with critical commentary. Both types, widely current in their literal form, undergo metaphoric transformation when authors treat the specimen as a quasi-genre like the fragment or sketch, or a medium for artistic self-reflection on the possibilities of a given genre or style. Using examples by Keats, Coleridge and Hookham Frere, the article outlines a Romantic poetics of the specimen
The Prospectus War of the 1790s: Literary Advertising in an Age of Revolution
Special issue on 'Literary Ephemera'Special issue on 'Literary Ephemera'Special issue on 'Literary Ephemera'Special issue on 'Literary Ephemera
Seeing social enterprise through the theoretical conceptualisation of ethical capital
Objectives: Current conceptualisations of social enterprise fail to fully satisfy an understanding of the movement. A focus on the economic implies a business model where deep tensions lie. A focus on social capital offers a different frame of reference, yet both these conceptualisations fail to fully identify the phenomena that is social enterprise. The objective of this paper seeks to fill that gap. Ethical capital is offered here as the missing conceptualisation in the field of social enterprise.
Prior work: Pearce (2003) describes social enterprises as part of the third system, closer to the first system (private business), than the second system (public provision), yet primarily social and secondly a business. Social Enterprises are described as trading organisations in a market (Pearce 2003). A focus and operationalisation for social enterprises to be âbusiness-likeâ and âentrepreneurialâ is well documented (Leadbeater 1997; Dees 1998; Nicholls 2006b).
Approach: Yet, if as part of the third sector, social enterprises are as Dart (2004) suggests; âblurring the boundaries between non-profit and profitâ, but what blurs? What is compromised? What exactly is lost (or gained)? What challenges are there for social enterprises? And is a managerialist ideology taking precedence over the social? This paper provides a conceptual paper that seeks to outline the arguments on the table and develop an ethical capital conceptualisation of social enterprise.
Results: This paper very much aims at starting the process of intellectual debate about the notion of ethical capital in social enterprises. The conclusions of this paper outline further research questions that need to be addressed in order to fully develop this concept. Implications: The current ideology of the neo-classical economic paradigm it is argued in the paper pursues interests towards the self and towards the erosion of the moral basis of association. The outcome leaves society with a problem of low ethical virtue - the implications of this paper are that social enterprises maximise ethical virtue beyond any other form of organisation and as such hold great value beyond their missions and values.
Value: This paper offers great value in the understanding of social enterprise through fresh insight into the conceptualisation. A critical perspective to the current literature is taken and discussed but though the introduction of ethical capital this paper takes our understanding of the value of the sector into another light, providing practitioners, business support agencies and academics alike with a different level of conceptualisation that has not been explored before.</p
Quantum Annihilation of Anti- de Sitter Universe
We discuss the role of conformal matter quantum effects (using large
anomaly induced effective action) to creation-annihilation of an Anti-de Sitter
Universe. The arbitrary GUT with conformally invariant content of fields is
considered. On a purely gravitational (supersymmetric) AdS background, the
quantum effects act against an (already existing) AdS Universe. The
annihilation of such a Universe occurs, what is common for any conformal matter
theory. On a dilaton-gravitational background, where there is dilatonic
contribution to the induced effective action, the quantum creation of an AdS
Universe is possible assuming fine-tuning of the dilaton.Comment: 7 pages, LaTeX, no figures, minor modifications. Version to appear in
Phys. Lett.
Conformal Anomaly for Dilaton Coupled Theories from AdS/CFT Correspondence
Trace anomaly for dilaton coupled conformal theories on curved background
with non-zero dilaton is found from supergravity side as an IR effect using
AdS/CFT correspondence. For it coincides with the conformal anomaly for
dilaton coupled scalar (up to total derivative term which is known to be
ambiguous). In four-dimensional case we get conformal anomaly for
super YM theory interacting with conformal supergravity. In the same way the
calculation of dilaton dependent conformal anomaly in higher dimensions seems
to be much easier than using standard QFT methods.Comment: LaTeX file 10 page
Quantum corrections to Higher-Dimensional Theories
This is a non-technical summary of the subtleties of quantum corrections on
extra-dimensional theories: should one first renormalize and then mode expand,
or first expand in four-dimensional modes and then renormalize?Comment: 9 pages, based on a talk at IRGAC 2006, Barcelon
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