Alternative theories to big bang
Pro Research Analysisby 
Searched over 200M research papers
Alternative Theories to the Big Bang
Complexity and Infinite Increase in Complexity
One alternative theory to the Big Bang suggests that the universe's complexity increases infinitely as it approaches the initial singularity. This theory posits that this infinite complexity results in non-calculability, preventing us from reaching the beginning of time. This idea is motivated by certain infinite-dimensional duality symmetries found in attempts to unify gravity with fundamental matter interactions, rooted in Einstein's theory .
Eternal Universe and Advanced Waves
Another speculative alternative is the concept of an eternal universe, which challenges the Big Bang theory by suggesting that all time—past, present, and future—is united into one entity. This theory uses advanced waves, which travel back in time and seem to violate causality, to propose a static universe. This model also incorporates elements like imaginary time, virtual reality, and quantum entanglement to explain the universe's creation and structure .
Zero Kelvin Big Bang (ZKBB)
The Zero Kelvin Big Bang (ZKBB) theory challenges the notion that the universe was created in a singular event. Instead, it suggests that the universe began with a "cosmic fabric" of pre-existing matter in pre-existing space. This theory posits that the Big Bang was a transitional event, not a creation event, and that the universe's initial state was a Bose-Einstein condensate of atomic hydrogen at zero Kelvin .
Dispersive Extinction Theory (DET) of Redshift
The Dispersive Extinction Theory (DET) offers an alternative explanation for the cosmic redshift, which is traditionally attributed to the expanding universe in the Big Bang model. DET suggests that redshift is proportional to the square of the linewidth and inversely proportional to the cube of the wavelength, challenging the Big Bang's interpretation of redshift and proposing a static universe instead .
Cyclic Universe and Static Universe Models
Some theories propose that the universe is not expanding but is instead static or cyclic. These models suggest that the universe undergoes infinite cycles of expansion and contraction, or that it remains in a steady state without a beginning or end. These ideas have been around since the early 20th century and continue to be explored by a minority of cosmologists .
Tired Light Theories
Tired light theories propose that the redshift observed in distant galaxies is due to the gradual loss of energy by photons as they travel through space, rather than the expansion of the universe. This theory challenges the Big Bang model by offering an alternative explanation for the redshift-distance relationship .
Positively Curved Universe
Another alternative model suggests that the universe has a positively curved surface, similar to a globe. This model proposes that the redshift observed in distant objects is due to the curvature of space-time, which causes objects to appear redshifted as they move away from the observer. This theory also provides a new way to calculate the size and mass of the universe .
Living Cosmos
The Living Cosmos theory posits that the universe began with a matter/antimatter duality and has evolved over billions of years through a process of cosmic reproduction and separation. This model challenges the Big Bang by suggesting that galaxies, stars, and atoms formed through nuclear and electromagnetic interactions, with gravity playing a minor role .
Big Crunch to Big Bang Transition
Finally, some theories explore the possibility of a universe that transitions from a contracting state (Big Crunch) to an expanding state (Big Bang). One such model involves 11-dimensional M-theory, where the universe collapses, bounces, and re-expands, potentially simplifying and modifying existing cosmological scenarios like the ekpyrotic model .
Conclusion
While the Big Bang theory remains the most widely accepted explanation for the origin of the universe, several alternative theories challenge its assumptions and offer different perspectives on cosmic origins. These theories range from the concept of an eternal universe and advanced waves to the Zero Kelvin Big Bang, Dispersive Extinction Theory, cyclic models, and more. Each of these alternatives provides unique insights and continues to fuel scientific debate and exploration.
Sources and full results
Most relevant research papers on this topic
Conventional Big Bang Theories and Tired Light Theories
The big bang or hot expanding model of cosmology is supported by the recession of galaxies and the cosmic microwave background, while the tired light theory is supported by the redshift-distance relationship.
DOI