17 research outputs found
Phenomenological Theory of Survival
Theoretical analysis proves that human survivability is dominated by an
unusual physical, rather than biological, mechanism, which yields an exact law.
The law agrees with all experimental data, but, contrary to existing theories,
it is the same for an entire species, i.e., it is independent of the
population, its phenotypes, environment and history. The law implies that the
survivability changes with environment via phase transitions, which are
simultaneous for all generations. They allow for a rapid (within few percent of
the life span) and significant increase in the life expectancy even above its
value at a much earlier age.Comment: 10 pages, 2 figure
Long range interaction yields a new kind of phase transition
DNA denaturation, wetting in two dimensions, depinning of a flux line, and
other problems map onto a phase transition with effective long range
interaction. It yields giant non-universal critical indexes, arbitrarily large
macroscopic correlation length and fluctuations at a finite distance from the
critical temperature. In the vicinity of this region the Gibbs distribution is
invalid, and thermodynamics must be calculated from the first principles. There
are no fluctuations above the critical temperature.Comment: 9 pages, no figures, an improved presentation of cond-mat/021217
Dark energy and quantum entanglement
Entangled states in the universe may change interpretation of observations
and even revise the concept of dark energy
Conservation laws in biology and evolution, their singularities and bans
Well known biological approximations are universal, i.e. invariant to
transformations from one species to another. With no other experimental data,
such invariance yields exact conservation (with respect to biological diversity
and evolutionary history) laws. The laws predict two alternative universal ways
of evolution and physiology; their singularities and bans; a new kind of rapid
(compared to lifespan), reversible, and accurate adaptation, which may be
directed. The laws agree with all experimental data, but challenge existing
theories.Comment: 8 pages, 1 figur
Non-coding DNA programs express adaptation and its universal law
Significant fraction (98.5% in humans) of most animal genomes is non- coding
dark matter. Its largely unknown function (1-5) is related to programming
(rather than to spontaneous mutations) of accurate adaptation to rapidly
changing environment. Programmed adaptation to the same universal law for
non-competing animals from anaerobic yeast to human is revealed in the study of
their extensively quantified mortality (6-21). Adaptation of animals with
removed non-coding DNA fractions may specify their contribution to genomic
programming. Emergence of new adaptation programs and their (non-Mendelian)
heredity may be studied in antibiotic mini-extinctions (22-24). On a large
evolutionary scale rapid universal adaptation was vital for survival, and
evolved, in otherwise lethal for diverse species major mass extinctions
(25-28). Evolutionary and experimental data corroborate these conclusions
(6-21, 29-32). Universal law implies certain biological universality of diverse
species, thus quantifies applicability of animal models to humans). Genomic
adaptation programming calls for unusual approach to its study and implies
unanticipated perspectives, in particular, directed biological changes.Comment: Refined version 19 pages, 10 fig
Comment on Why is the DNA Transition First Order? and Griffiths Singularities in Unbinding of Strongly Disordered Polymers
The papers [1,2] consider unbinding of a disordered heteropolymer. They find
the first order phase transition [1] when disorder is strong (i.e. the ratio v
of the binding energies is large; in DNA v is~1.1) and the Griffiths
singularity, i.e. infinite order transition, otherwise [2]. The problem is
important, since many physical phenomena map onto the same model (see refs. in
[1, 2]). Drastic non-universality in the strength of disorder is unanticipated.
Unfortunately, both titles are misleading: they claim the results which are
proven for homopolymers only
Immortality as a physical problem
Well protected human and laboratory animal populations with abundant
resources are evolutionary unprecedented. Physical approach, which takes
advantage of their extensively quantified mortality, establishes that its
dominant fraction yields the exact law, whose universality from yeast to humans
is unprecedented, and suggests its unusual mechanism. Singularities of the law
demonstrate new kind of stepwise adaptation. The law proves that universal
mortality is an evolutionary byproduct, which at any age is reversible,
independent of previous life history, and may be disposable. Recent experiments
verify these predictions. Life expectancy may be extended, arguably to
immortality, by relatively small and universal biological amendments in the
animals. Indeed, it doubled with improving conditions in humans; increased
2.4-fold with genotype change in Drosophila, and 6-fold (to 430 years in human
terms), with no apparent loss in health and vitality, in nematodes with a small
number of perturbed genes and tissues. The law suggests a physical mechanism of
the universal mortality and its regulation.Comment: refined versio
DNA denaturation as a new kind of phase transition
Unbinding of a double-stranded DNA reduces to an unscreened long range
interaction and maps on various problems. Heterogeneity renormalizes
interaction. Renormalization is temperature dependent. At an unbinding
transition it approaches critical dimensionality. This implies giant
non-universal critical indexes and invalidity of the Gibbs distribution
sufficiently close to the critical temperature Tc. Fluctuations are
macroscopically large below Tc. There are no fluctuations above it.Comment: 7 pages, no figure
Biological universality yields new kind of laws
Biological approximations, which are universal for diverse species, are well
known. With no other experimental data, their invariance to transformations
from one species to another yields exact conservation (with respect to
biological diversity and evolutionary history) laws, which are inconsistent
with known physics and unique for self-organized live systems. The laws predict
two and only two universal ways of biological diversity and evolution; their
singularities; a new kind of rapid (compared to lifespan) adaptation and
reversible mortality, which may be directed. Predictions agree with
experimental data, and call for new concepts, insights, and microscopic theory.Comment: 15 pages, no figures, a generalization of cond-mat/021217
Dynamics of mortality in protected populations
Demographic data and recent experiments verify earlier predictions that
mortality has short (few percent of the life span) memory of the previous life
history, may be significantly decreased, reset to its value at a much younger
age, and (until certain age) eliminated. Such mortality dynamics is
demonstrated to be characteristic only of evolutionary unprecedented protected
populations. When conditions improve, their mortality decreases stepwise. At
crossovers the rate of decrease rapidly changes. The crossovers manifest the
edges of the stairs in the universal ladder of rapid mortality adjustment to
changing conditions. Mortality is dominated by the established universal law
which reduces it to few biologically explicit parameters and which is verified
with human and fly mortality data. Specific experiments to test universality of
the law for other animals, and to unravel the mechanism of stepwise life
extension, are suggested.Comment: Invited talk at Conference on old ag