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Amartya Sen

Bio: Amartya Sen is an academic researcher from Harvard University. The author has contributed to research in topics: Poverty & Human rights. The author has an hindex of 149, co-authored 689 publications receiving 141907 citations. Previous affiliations of Amartya Sen include Trinity College, Dublin & University of Chicago.


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Amartya Sen1
TL;DR: Stig Kanger was a philosopher of extraordinary power and creativity as discussed by the authors, who made far-reaching contributions in logic, choice theory, in the theory of rights, and in many other fields.
Abstract: Stig Kanger was a philosopher of extraordinary power and creativity. In logic, in choice theory, in the theory of rights, and in many other fields, Kanger made far-reaching contributions which were profoundly important for the respective subjects. But he was not invariably a person of the greatest perseverance. He would often make an extremely innovative departure from the received tradition, but then move on to something else without staying on to finish the work he had started.

4 citations

Journal ArticleDOI
TL;DR: This work has shown that a local gauge string with a phenomenological energy momentum tensor is consistent in a more general scalar tensor theory where $\ensuremath{\omega}$ is a function of the scalar field.
Abstract: A recent investigation shows that a local gauge string with a phenomenological energy momentum tensor, as prescribed by Vilenkin, is inconsistent in Brans-Dicke theory. In this work it is shown that such a string is consistent in a more general scalar tensor theory where $\ensuremath{\omega}$ is a function of the scalar field. A set of solutions of full nonlinear Einstein equations for the interior region of such a string is presented.

4 citations


Cited by
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TL;DR: This review considers research from both perspectives concerning the nature of well-being, its antecedents, and its stability across time and culture.
Abstract: ▪ Abstract Well-being is a complex construct that concerns optimal experience and functioning. Current research on well-being has been derived from two general perspectives: the hedonic approach, which focuses on happiness and defines well-being in terms of pleasure attainment and pain avoidance; and the eudaimonic approach, which focuses on meaning and self-realization and defines well-being in terms of the degree to which a person is fully functioning. These two views have given rise to different research foci and a body of knowledge that is in some areas divergent and in others complementary. New methodological developments concerning multilevel modeling and construct comparisons are also allowing researchers to formulate new questions for the field. This review considers research from both perspectives concerning the nature of well-being, its antecedents, and its stability across time and culture.

8,243 citations

Journal ArticleDOI
TL;DR: The Commission on Social Determinants of Health (CSDH) as mentioned in this paper was created to marshal the evidence on what can be done to promote health equity and to foster a global movement to achieve it.

7,335 citations

Journal ArticleDOI
08 Aug 2002-Nature
TL;DR: A doubling in global food demand projected for the next 50 years poses huge challenges for the sustainability both of food production and of terrestrial and aquatic ecosystems and the services they provide to society.
Abstract: A doubling in global food demand projected for the next 50 years poses huge challenges for the sustainability both of food production and of terrestrial and aquatic ecosystems and the services they provide to society. Agriculturalists are the principal managers of global useable lands and will shape, perhaps irreversibly, the surface of the Earth in the coming decades. New incentives and policies for ensuring the sustainability of agriculture and ecosystem services will be crucial if we are to meet the demands of improving yields without compromising environmental integrity or public health.

6,569 citations

Journal ArticleDOI
TL;DR: In this article, the authors review the observational evidence for the current accelerated expansion of the universe and present a number of dark energy models in addition to the conventional cosmological constant, paying particular attention to scalar field models such as quintessence, K-essence and tachyon.
Abstract: We review in detail a number of approaches that have been adopted to try and explain the remarkable observation of our accelerating universe. In particular we discuss the arguments for and recent progress made towards understanding the nature of dark energy. We review the observational evidence for the current accelerated expansion of the universe and present a number of dark energy models in addition to the conventional cosmological constant, paying particular attention to scalar field models such as quintessence, K-essence, tachyon, phantom and dilatonic models. The importance of cosmological scaling solutions is emphasized when studying the dynamical system of scalar fields including coupled dark energy. We study the evolution of cosmological perturbations allowing us to confront them with the observation of the Cosmic Microwave Background and Large Scale Structure and demonstrate how it is possible in principle to reconstruct the equation of state of dark energy by also using Supernovae Ia observational data. We also discuss in detail the nature of tracking solutions in cosmology, particle physics and braneworld models of dark energy, the nature of possible future singularities, the effect of higher order curvature terms to avoid a Big Rip singularity, and approaches to modifying gravity which leads to a late-time accelerated expansion without recourse to a new form of dark energy.

5,954 citations