Since it was first published, Quantum Field Theory in a Nutshell has quickly established itself as the most accessible and comprehensive introduction to this profound and deeply fascinating area of theoretical physics. Now in this fully revised and expanded edition, A. Zee covers the latest advances while providing a solid conceptual foundation for students to build on, making this the most up-to-date and modern textbook on quantum field theory available. -/- This expanded edition features several additional chapters, as well as (...) an entirely new section describing recent developments in quantum field theory such as gravitational waves, the helicity spinor formalism, on-shell gluon scattering, recursion relations for amplitudes with complex momenta, and the hidden connection between Yang-Mills theory and Einstein gravity. Zee also provides added exercises, explanations, and examples, as well as detailed appendices, solutions to selected exercises, and suggestions for further reading. (shrink)

Concept of ethics in Ādi-Granth, Sikh canon.

On the life and philosophy of Bhāskarācārya, 8th cent., Vedanta philospher and commentator of Brahmasūtra.

La admirable riqueza cultural y artística del Renacimiento esconde una desoladora miseria y aquella "edad de la abundancia" contrasta con una inmensa pobreza. Lejos de ser una broma o una pesadilla, la celebrada Utopía de Tomás Moro fue antes que nada un desafío insoslayable, pues proponía que ninguna sociedad merece tal nombre si tolera la miseria de un solo pobre. Rico y pobre explora la cuestión en ese libro de 1516 y en otros del escritor londinense para concluir con un (...) esbozo de su vida a la luz de la pobreza como virtud indispensable y libertadora. He aquí un hombre afortunado que no fue indiferente ante el infortunio de tantos y que vio en la humanitas la virtud por excelencia que lleva a una constante atención y cuidado del prójimo. Inspirado por un cambio de actitud en su época, así como por su fe cristiana y la mejor tradición estoica, mostró una robusta preocupación sobre el tema subrayando el valor social que debe tener toda riqueza, tanto a nivel estatal como individual, destacando la grave obligación cívica de los ricos y la necesidad que tienen todos, ricos y pobres, de empeñarse en la práctica de cierto desprendimiento y generosidad si no quieren mermar su propia humanidad y fallecer en su avaricia. La percepción de la miseria había cambiado de tal manera que su remedio ya no podía estar en una u otra limosna en plazas e iglesias, sino en la acción bien pensada y perentoria de todo gobierno que se tenga por justo. Sir Tomás Moro, privilegiado desde la cuna y seguro en su trabajo profesional, vio la pobreza de tantos como un desastre social, pero uno que, al mismo tiempo, debería llevar a todo ser humano a ver en el desprendimiento y generosidad una excelencia o virtud que alumbra la "otra" libertad, y tan íntima y valiosa que en su caso brilló aun en la prisión y ante el horror de una muerte injusta y atroz." -- Page 4 of cover. (shrink)

Classical commentary on Yogasūtra of Patañjali, work on Yoga philosophy; includes complete text of Yogasūtra.

Upshot: Since all my commentators express some reservation about the distinction between the cognitive and non-cognitive aspects of knowledge in general, and its applicability and relevance in the domain of religious belief in particular, I will address the question of why this distinction is important and whether these two modes of knowledge can be communicated. Further questions I try to address include: Can a radical constructivist be an atheist, or alternatively a religious believer? What exactly would these designations mean? Is (...) it at all possible to discuss meaningfully the question of whether God exists? Can two or more people ascertain whether they in fact share their concept of a God? (shrink)

What is sin? Is it simply wrongdoing? Why do its effects linger over time? In this sensitive, imaginative, and original work, Gary Anderson shows how changing conceptions of sin and forgiveness lay at the very heart of the biblical tradition. Spanning nearly two thousand years, the book brilliantly demonstrates how sin, once conceived of as a physical burden, becomes, over time, eclipsed by economic metaphors. Transformed from a weight that an individual carried, sin becomes a debt that must be repaid (...) in order to be redeemed in God's eyes. Anderson shows how this ancient Jewish revolution in thought shaped the way the Christian church understood the death and resurrection of Jesus and eventually led to the development of various penitential disciplines, deeds of charity, and even papal indulgences. In so doing it reveals how these changing notions of sin provided a spur for the Protestant Reformation. Broad in scope while still exceptionally attentive to detail, this ambitious and profound book unveils one of the most seismic shifts that occurred in religious belief and practice, deepening our understanding of one of the most fundamental aspects of human experience. (shrink)

On Islamic religious life and Islamic ethics in view of various Islamic stories.

Este manuscrito apresenta um ponto de vista sobre o conhecimento da origem do cosmos. A ciência afirma que o Universo teve um começo com o tempo, mas também declara que nenhuma lei natural pode ser aplicada no tempo inicial. Considerando que se trata de algo exclusivo da ciência divina, sugere-se então a instrumentalidade da fé para se conhecer aquilo que de fato é relevante sobre o início da história.

In recent years attention to the philosophical and literary production of P. A. Florenskii has become commonplace. The thinker's intellectual legacy is very great. In September 1919, Florenskii wrote a prospectus for a collection of his own writings, which would have amounted to nineteen volumes. The collection was not published, for a number of reasons; nonetheless, many of the philosopher's works did come out during his lifetime. Florenskii's writing, published in small editions and scattered among various journals, are still quite (...) inaccessible to readers. (shrink)

This article must open with a Warning. In face of the positive information which the sciences supply, the philosophical contribution to this problem will seem disappointingly negative, or at least mine will do so. For I shall insist, and I think we can only rightly insist, that the philosopher is not yet in a position to produce a satisfactory positive theory of the relation between mind and body. And I shall annoy many of you further by insisting that the old-fashioned (...) “dualism” has not really been disproved. However, even if you do not agree with me, it is at any rate a good general piece of advice that, when we are confronted with a philosophical view which has maintained its ground for a very long time but seems to ourselves or to our generation very unreasonable, we should look specially carefully to find the positive grounds which have made so apparently unplausible a doctrine seem true to so many competent thinkers. (shrink)