212 citations · 666 across the 34 of their papers we have counts for
34 papers
Multiverse Predictions for Habitability: Fundamental Physics and Galactic Habitability
McCullen Sandora
In the multiverse hypothesis, a range of universes exist with differing values of our physical constants. Here, we investigate how the probabilities of observing our values of thes…
Multiverse Predictions for Habitability: The Habitability of Exotic Environments
McCullen Sandora
The relative abundances of exotic environments provides us with (uninformed) bounds on the habitability of those environments relative to our own, on the basis that our presence he…
Information Gain as a Tool for Assessing Biosignature Missions
Benjamin Fields, Sohom Gupta, McCullen Sandora
We propose the mathematical notion of information gain as a way of quantitatively assessing the value of biosignature missions. This makes it simple to determine how mission value…
Multiverse Predictions for Habitability: Origin of Life Scenarios
McCullen Sandora, Vladimir Airapetian, Luke Barnes +2
If the origin of life is rare and sensitive to the local conditions at the site of its emergence, then, using the principle of mediocrity within a multiverse framework, we may expe…
Multiverse Predictions for Habitability: Stellar and Atmospheric Habitability
McCullen Sandora, Vladimir Airapetian, Luke Barnes +1
Stellar activity and planetary atmospheric properties have the potential to strongly influence habitability. To date, neither have been adequately studied in the multiverse context…
Multiverse Predictions for Habitability: Planetary Characteristics
McCullen Sandora, Vladimir Airapetian, Luke Barnes +1
Recent detections of potentially habitable exoplanets around sunlike stars demand increased exploration of the physical conditions that can sustain life, by whatever methods availa…
Multiverse Predictions for Habitability: Element Abundances
McCullen Sandora, Vladimir Airapetian, Luke Barnes +2
We investigate the dependence of elemental abundances on physical constants, and the implications this has for the distribution of complex life for various proposed habitability cr…
Community Report from the Biosignatures Standards of Evidence Workshop
Victoria Meadows, Heather Graham, Victor Abrahamsson +72
The search for life beyond the Earth is the overarching goal of the NASA Astrobiology Program, and it underpins the science of missions that explore the environments of Solar Syste…
Explaining the Effectiveness of Multi-Task Learning for Efficient Knowledge Extraction from Spine MRI Reports
Arijit Sehanobish, McCullen Sandora, Nabila Abraham +7
Pretrained Transformer based models finetuned on domain specific corpora have changed the landscape of NLP. However, training or fine-tuning these models for individual tasks can b…
Biosignature Surveys to Exoplanet Yields and Beyond
McCullen Sandora, Joseph Silk
Upcoming biosignature searches focus on indirect indicators to infer the presence of life on other worlds. Aside from just signaling the presence of life, however, some biosignatur…
Symmetries from Locality. II. Gravitation and Lorentz Boosts
Mark P. Hertzberg, Jacob A. Litterer, McCullen Sandora
It is known that local, Lorentz invariant, unitary theories involving particles with spin 1 demand that the matter sector they couple to are organized by internal physical symmetri…
OWL-MOON : Very high resolution spectro-imaging and Earth-Moon interferometry: exoplanets to cosmology
J. Schneider, J. Silk, F. Vakili +5
We address three major questions in astronomy, namely the detection of biosignatures on habitable exoplanets, the geophysics of exoplanets and cosmology. To achieve this goal, two…
Dark Matter and Naturalness
Mark P. Hertzberg, McCullen Sandora
The Standard Model of particle physics is governed by Poincaré symmetry, while all other symmetries, exact or approximate, are essentially dictated by theoretical consistency with…
Multiverse Predictions for Habitability: Fraction of Life that Develops Intelligence
McCullen Sandora
Do mass extinctions affect the development of intelligence? If so, we may expect to be in a universe that is exceptionally placid. We consider the effects of impacts, supervolcanoe…
Multiverse Predictions for Habitability: Fraction of Planets that Develop Life
McCullen Sandora
In a multiverse context, determining the probability of being in our particular universe depends on estimating its overall habitability compared to other universes with different v…
Multiverse Predictions for Habitability: Number of Potentially Habitable Planets
McCullen Sandora
How good is our universe at making habitable planets? The answer to this depends on which factors are important for life: Does a planet need to be Earth mass? Does it need to be in…
Multiverse Predictions for Habitability: The Number of Stars and their Properties
McCullen Sandora
In a multiverse setting, we expect to be situated in a universe that is exceptionally good at producing life. Though the conditions for what life needs to arise and thrive are curr…
Quantum Fine-Tuning in Stringy Quintessence Models
Mark P. Hertzberg, McCullen Sandora, Mark Trodden
We investigate the extent to which quintessence models for dark energy are fine-tuned in the context of recent swampland conjectures. In particular, the issue is whether there is a…
Charged Planckian Interacting Dark Matter
Mathias Garny, Andrea Palessandro, McCullen Sandora +1
A minimal model of Cold Dark Matter (CDM) is a very massive particle with only gravitational interactions, also called Planckian Interacting Dark Matter (PIDM). Here we consider an…
Anthropics of Aluminum-26 Decay and Biological Homochirality
McCullen Sandora
Results of recent experiment reinstate feasibility to the hypothesis that biomolecular homochirality originates from beta decay. Coupled with hints that this process occurred extra…
Is Patience a Virtue? Cosmic Censorship of Infrared Effects in de Sitter
Ricardo Z. Ferreira, McCullen Sandora, Martin S. Sloth
While the accumulation of long wavelength modes during inflation wreaks havoc on the large scale structure of spacetime, the question of even observability of their presence by any…
Special Relativity from Soft Gravitons
Mark P. Hertzberg, McCullen Sandora
We study all translationally and rotationally invariant local theories involving massless spin 2 and spin 1 particles that mediate long range forces, allowing for general energy re…
Patient Observers and Non-perturbative Infrared Dynamics in Inflation
Ricardo Z. Ferreira, McCullen Sandora, Martin S. Sloth
We have previously derived the effect of soft graviton modes on the quantum state of de Sitter using spontaneously broken asymptotic symmetries. In the present paper we reinterpret…
General Relativity from Causality
Mark P. Hertzberg, McCullen Sandora
We study large families of theories of interacting spin 2 particles from the point of view of causality. Although it is often stated that there is a unique Lorentz invariant effect…