Effects of the Planar Galactic Tides and Stellar Mass on Comet Cloud Dynamics

We report the first results of a research program to explore the sensitivity of the orbits of Oort cloud comets to changes in the strength of the Galactic tides in the plane of the disk and also to changes in the mass of the host star. We performed 2D simulations that confirm that the effects of the tides on comet orbits are sensitive to a star's distance from the Galactic center. A comet cloud closer to the Galactic center than the Sun will have comet perihelia reduced to the region of the inner planets more effectively by the planar tides alone. Similar results are found for a star of smaller mass. We also show how this phenomenon of comet injection persists for a set of alternative Galactic potential models. These preliminary results suggest a fruitful line of research, one that aims to generalize the study of comet cloud dynamics to systems different from the Solar System. In particular, it will allow us to study the roles played by comet clouds in defining the boundaries of the Galactic Habitable Zone.Comment: Published by The Open Astronomy Journal; some slight differences from published versio

On the q−q-parameter spectrum of generalized information-entropy measures with no cut-off prescriptions

After studying some properties of the generalized exponential and logarithmic function, in particular investigating the domain where the first maintains itself real and positive, and outlining how the known dualities $q \leftrightarrow \frac{1}{q}$ and $q \leftrightarrow 2-q$ play an important role, we shall examine the set of q-deforming parameters that allow generalized canonical maximum entropy probability distributions (MEPDs) to maintain itself positive and real without cut-off prescriptions. We determine the set of q-deforming parameters for which a generalized statistics with discrete but unbound energy states is possible.Comment: 12 pages, 4 figure

Free Progress Education

Schools, colleges, and universities have become homogenizing systems that are almost exclusively focused on imposing a pre-ordered curricula through exams and grades or tight research lines. In the process, they are killing passion, creativity, and individuals’ potential and skills. Ultimately, schools and academia make up a system that serves a collective machinery but suffocates individual growth. This state of affairs is not a necessary evil. Learning, discovering and teaching can be a natural, spontaneous and luminous expressions of a free and progressive growth if they are allowed to be practiced in an appropriate environment. This is a ‘manifesto’ for a Free-Progress-Education (FPE) paradigm according to which the best way of learning, acquiring knowledge, and doing research comes through a process of free self-directed learning, and a progress of self-unfoldment and self-discovery, that must be guided from within. In schools, colleges, universities and beyond. A FPE learning centre would be expected to foster curiosity, intuition, self-directed-learning in diversity, and, especially, wholesome respect for the practice of complete and responsible freedom of individual expression.FPE goes beyond the standard paradigm of unschooling or the pedagogical approach of democratic schools since it includes self-directed-education that can also work in high schools, colleges, universities, and research centres. It iAfter a brief introductory presentation, a personal preamble of the author describes his experiences with institutionalized learning from childhood to the doctoral dissertation and in a high school as a teacher. Then, the roots of the stagnant state of education will be investigated which is still based on an industrial and mechanistic mindset, and is perceived with increasing dissatisfaction. While analysing the detrimental effects that a managerial and industrial mentality has had on the education and intellectual growth of several generations, we will take as an example the deficiencies of the so-called big science, i.e. of the modern, large-scale scientific initiatives. Surveying past and present learning approaches such as the interesting renaissance of homeschooling and welcoming new trends such as unschooling or democratic education, the second part of this book looks beyond these paradigms searching for a wider spirit of education. It is emphasized that no reform is possible inside the current school and university paradigm, because it is in its essence an authoritarian system that won't allow itself to be dismantled from within. The last part of this book focuses upon a brief set of alternative proposals, which aim at overcoming the centuries-old shortcomings of the present educational system, by favouring intrinsic over extrinsic motivation. Preliminary practical ideas are put forward on what a free-progress learning community might look like, and what the first steps for its realization might be. It is explained there why it is only through a change from the ground up that the certificate-oriented educational system can transform itself into a project-oriented, self-organized, competence-portfolio based one, with no exams, grades, degrees, or other administrative trammels. At the same time, it must be made clear that the ultimate aim of doing away with the present system of assessment criteria would be to install a much deeper and articulated paradigm shift than some superficial reform and even beyond the actually undeveloped democratic education concept which still falls short beyond high-school level. What is visualized is an evolutionary pedagogical perspective, compared to the conventional one, and presented as the necessary condition for a 'Copernican approach' to education. Only after that perspective has been realized can new competences, curiosity, intuition, and real forms of creative learning return to flourish in schools and academia

Vitalism and the Cognizing Universe: Time for a Comeback?

It is generally believed that vitalism has been disproven and must be relegated as a pseudo-intellectual relic of the history of science. Moreover, idealistic conceptions that posit cognition as a basic primitive of realty are also widely believed to be incompatible with current scientific evidence. We highlight how the conjectures about the nature of life and mind, have been dismissed too early and need a more convincing review. The arguments against vitalism lay on shaky foundations. We will also argue that current scientific evidence not only allows, but even suggests, that vitalism could go hand in hand with some form of idealism if we posit a life-principle and a mind-principle as two distinct aspects of consciousness preeminent over matter. However, we won’t argue in favor of vitalism, rather that it was and remains an open question that, contrary to widespread claims, has not been ruled out by modern science

On compressive radial tidal forces

Radial tidal forces can be compressive instead of disruptive, a possibility that is frequently overlooked in high level physics courses. For example, radial tidal compression can emerge in extended stellar systems containing a smaller stellar cluster. For particular conditions the tidal field produced by this extended mass distribution can exert on the cluster it contains compressive effects instead of the common disruptive forces. This interesting aspect of gravity can be derived from standard relations given in many textbooks and introductory courses in astronomy and can serve as an opportunity to look closer at some aspects of gravitational physics, stellar dynamics, and differential geometry. The existence of compressive tides at the center of huge stellar systems might suggest new evolutionary scenarios for the formation of stars and primordial galactic formation processes.Comment: 22 pages, 2 figure

Spirit calls Nature: Bridging Science and Spirituality, Consciousness and Evolution in a Synthesis of Knowledge

This is a technical treatise for the scientific-minded readers trying to expand their intellectual horizon beyond the straitjacket of materialism. It is dedicated to those scientists and philosophers who feel there is something more, but struggle with connecting the dots into a more coherent picture supported by a way of seeing that allows us to overcome the present paradigm and yet maintains a scientific and conceptual rigor, without falling into oversimplifications. Most of the topics discussed are unknown even to neuroscientists, biologists, philosophers, and yet are based on the findings published in their own mainstream peer reviewed literature or on deep insights of the scientific, philosophical and spiritual giants of the past. A scientific, philosophical, and spiritual overview of the relationship between science and spirituality, neuroscience and the mystery of consciousness, mind and the nature of reality, evolution and life. A plaidoyer for a science that goes beyond the curve of reason and embraces a new synthesis of knowledge. The overcoming of the limitations of the intellect into an extended vision of ourselves and Nature. A critique of physicalism, the still-dominant doctrine that believes that all reality can be reduced to matter and the laws of physics alone. A review and reassessment of the old and new philosophical and metaphysical ideas which attempts to bring closer Western and Eastern traditions where science, philosophy, consciousness, Spirit and Nature are united in a grand vision that transcends the limited conventional scientific and philosophical paradigm. A possible answer to the questions of purpose and meaning and the future evolution of humankind beyond a conception that posits a priori a purposeless and meaningless universe. A report of the new scientific discoveries of a basal intelligence in cells and plants, on the question if mind is computational, the issue of free will, the mind-body problem, and the so called ‘hard problem of consciousness’. An essay on ancient as modern philosophical conceptions, from the One of Plotinus, the God of Spinoza until the recent revival of panpsychism or the universal consciousness. A journey into quantum physics from the perspective of philosophical idealism and an invitation to adopt new ways of seeing that might help us to transform our present understanding, expanding it into an integral cosmology, with a special emphasis on the spiritual and evolutionary cosmology of the Indian seer Sri Aurobindo. Not just a philosophical and metaphysical meditation but, rather, an appeal to work towards a change of consciousness, a widening of our perspective towards a new way of seeing beyond a purely mechanistic worldview to avoid a social, environmental and economic collapse. Humans are transitional beings that will have to make a choice: relapse into a pre-rational state or evolve towards a new trans-rational species supported by an ideal of human unity in diversity as the expression of a spiritual evolutionary process, the call of the Spirit on Nature

On the extended Kolmogorov-Nagumo information-entropy theory, the q -> 1/q duality and its possible implications for a non-extensive two dimensional Ising model

The aim of this paper is to investigate the q -> 1/q duality in an information-entropy theory of all q-generalized entropy functionals (Tsallis, Renyi and Sharma-Mittal measures) in the light of a representation based on generalized exponential and logarithm functions subjected to Kolmogorov's and Nagumo's averaging. We show that it is precisely in this representation that the form invariance of all entropy functionals is maintained under the action of this duality. The generalized partition function also results to be a scalar invariant under the q -> 1/q transformation which can be interpreted as a non-extensive two dimensional Ising model duality between systems governed by two different power law long-range interactions and temperatures. This does not hold only for Tsallis statistics, but is a characteristic feature of all stationary distributions described by q-exponential Boltzmann factors.Comment: 13 pages, accepted for publication in Physica