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Sean M. Carroll [15]Sean Carroll [4]Sean B. Carroll [3]Sandra Carroll [3]
Susanne E. Carroll [1]S. Carroll [1]Steven Carroll [1]Stuart Carroll [1]

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Sean M. Carroll
California Institute of Technology
Sean Carroll
University of Texas at San Antonio
  1. Self-Locating Uncertainty and the Origin of Probability in Everettian Quantum Mechanics.Charles T. Sebens & Sean M. Carroll - 2016 - British Journal for the Philosophy of Science (1):axw004.
    A longstanding issue in attempts to understand the Everett (Many-Worlds) approach to quantum mechanics is the origin of the Born rule: why is the probability given by the square of the amplitude? Following Vaidman, we note that observers are in a position of self-locating uncertainty during the period between the branches of the wave function splitting via decoherence and the observer registering the outcome of the measurement. In this period it is tempting to regard each branch as equiprobable, but we (...)
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  2.  24
    From Eternity to Here: The Quest for the Ultimate Theory of Time.Sean Carroll - 2010 - Dutton.
    This book provides an account of the nature of time, especially time's arrow and the role of entropy, at a semi-popular level. Special attention is given to statistical mechanics, the past hypothesis, and possible cosmological explanations thereof.
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  3.  60
    The Big Picture: On the Origins of Life, Meaning, and the Universe Itself.Sean Carroll - 2016 - Dutton.
    I discuss "Poetic Naturalism" -- there is only one world, the natural world, but there are many ways of talking about it -- both as a general concept, and how it accounts for our actual world. I talk about emergence, fundamental physics, entropy and complexity, the origins of life and consciousness, and moral constructivism.
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  4.  10
    Mad-Dog Everettianism: Quantum Mechanics at Its Most Minimal.Sean M. Carroll & Ashmeet Singh - 2019 - In Anthony Aguirre, Brendan Foster & Zeeya Merali (eds.), What is Fundamental? Springer Verlag. pp. 95-104.
    To the best of our current understanding, quantum mechanics is part of the most fundamental picture of the universe. It is natural to ask how pure and minimal this fundamental quantum description can be. The simplest quantum ontology is that of the Everett or Many-Worlds interpretation, based on a vector in Hilbert space and a Hamiltonian. Typically one also relies on some classical structure, such as space and local configuration variables within it, which then gets promoted to an algebra of (...)
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  5. Beyond Falsifiability: Normal Science in a Multiverse.Sean M. Carroll - 2019 - In Richard Dawid, Radin Dardashti & Karim Thebault (eds.), Epistemology of Fundamental Physics: Why Trust a Theory? Cambridge, UK: Cambridge University Press.
    Cosmological models that invoke a multiverse - a collection of unobservable regions of space where conditions are very different from the region around us - are controversial, on the grounds that unobservable phenomena shouldn't play a crucial role in legitimate scientific theories. I argue that the way we evaluate multiverse models is precisely the same as the way we evaluate any other models, on the basis of abduction, Bayesian inference, and empirical success. There is no scientifically respectable way to do (...)
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  6. In What Sense Is the Early Universe Fine-Tuned?Sean M. Carroll - forthcoming - In Barry Loewer, Brad Weslake & Eric Winsberg (eds.), Time's Arrows and the Probability Structure of the World. Harvard University Press.
    It is commonplace in discussions of modern cosmology to assert that the early universe began in a special state. Conventionally, cosmologists characterize this fine-tuning in terms of the horizon and flatness problems. I argue that the fine-tuning is real, but these problems aren't the best way to think about it: causal disconnection of separated regions isn't the real problem, and flatness isn't a problem at all. Fine-tuning is better understood in terms of a measure on the space of trajectories: given (...)
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  7. Many Worlds, the Born Rule, and Self-Locating Uncertainty.Sean M. Carroll & Charles T. Sebens - 2014 - In Daniele C. Struppa & Jeffrey M. Tollaksen (eds.), Quantum Theory: A Two-Time Success Story. Springer. pp. 157-169.
    We provide a derivation of the Born Rule in the context of the Everett (Many-Worlds) approach to quantum mechanics. Our argument is based on the idea of self-locating uncertainty: in the period between the wave function branching via decoherence and an observer registering the outcome of the measurement, that observer can know the state of the universe precisely without knowing which branch they are on. We show that there is a uniquely rational way to apportion credence in such cases, which (...)
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  8. Why Boltzmann Brains Are Bad.Sean M. Carroll - forthcoming - In Shamik Dasgupta & Brad Weslake (eds.), Current Controversies in Philosophy of Science. Routledge.
    Some modern cosmological models predict the appearance of Boltzmann Brains: observers who randomly fluctuate out of a thermal bath rather than naturally evolving from a low-entropy Big Bang. A theory in which most observers are of the Boltzmann Brain type is generally thought to be unacceptable, although opinions differ. I argue that such theories are indeed unacceptable: the real problem is with fluctuations into observers who are locally identical to ordinary observers, and their existence cannot be swept under the rug (...)
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  9.  50
    Spacetime and Geometry: An Introduction to General Relativity.Sean M. Carroll - 2003 - San Francisco, USA: Pearson.
    Graduate-level textbook in general relativity.
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  10. Why Is There Something, Rather Than Nothing?Sean M. Carroll - forthcoming - In Eleanor Knox & Alastair Wilson (eds.), Routledge Companion to the Philosophy of Physics.
    It seems natural to ask why the universe exists at all. Modern physics suggests that the universe can exist all by itself as a self-contained system, without anything external to create or sustain it. But there might not be an absolute answer to why it exists. I argue that any attempt to account for the existence of something rather than nothing must ultimately bottom out in a set of brute facts; the universe simply is, without ultimate cause or explanation.
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  11.  39
    De Sitter Space Without Dynamical Quantum Fluctuations.Kimberly K. Boddy, Sean M. Carroll & Jason Pollack - 2016 - Foundations of Physics 46 (6):702-735.
    We argue that, under certain plausible assumptions, de Sitter space settles into a quiescent vacuum in which there are no dynamical quantum fluctuations. Such fluctuations require either an evolving microstate, or time-dependent histories of out-of-equilibrium recording devices, which we argue are absent in stationary states. For a massive scalar field in a fixed de Sitter background, the cosmic no-hair theorem implies that the state of the patch approaches the vacuum, where there are no fluctuations. We argue that an analogous conclusion (...)
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  12. Does the Universe Need God?Sean M. Carroll - 2012 - In J. B. Stump & Alan G. Padgett (eds.), The Blackwell Companion to Science and Christianity. Wiley-Blackwell. pp. 185-197.
    I ask whether what we know about the universe from modern physics and cosmology, including fine-tuning, provides compelling evidence for the existence of God, and answer largely in the negative.
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  13. Why (Almost All) Cosmologists Are Atheists.Sean Carroll - 2005 - Faith and Philosophy 22 (5):622-635.
    Science and religion both make claims about the fundamental workings of the universe. Although these claims are not a priori incompatible (we could imaginebeing brought to religious belief through scientific investigation), I will argue that in practice they diverge. If we believe that the methods of science can be used to discriminate between fundamental pictures of reality, we are led to a strictly materialist conception of the universe. While the details of modern cosmology are not a necessary part of this (...)
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  14.  6
    Wax, Sex and the Origin of Species: Dual Roles of Insect Cuticular Hydrocarbons in Adaptation and Mating.Henry Chung & Sean B. Carroll - 2015 - Bioessays 37 (7):822-830.
  15.  6
    The Origin, Patterning and Evolution of Insect Appendages.Jim A. Williams & Sean B. Carroll - 1993 - Bioessays 15 (9):567-577.
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  16.  4
    A Panic About School Choice.Steven Carroll & Geoffrey Walford - 1996 - Educational Studies 22 (3):393-407.
    It is now widely recognised that Britain's comprehensive system was never truly comprehensive. Families with sufficient financial capital were always able to ensure the entry of their children to particularly prestigious ‘comprehensive’ schools by purchasing a home within the appropriate catchment areas. According to government rhetoric, recent legislation established a market of schools, removed catchment areas and gave parents greater choice of school. This case‐study examines the workings of the local quasi‐market of schools within a prosperous town which is part (...)
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  17. Endless Forms Most Beautiful: The New Science of Evo Devo.Sean Carroll - 2007 - Journal of the History of Biology 40 (3):594-597.
  18.  6
    Educating Hearts: Seven Characteristics of a Good School [Book Review].Sandra Carroll - 2015 - The Australasian Catholic Record 92 (1):115.
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  19.  51
    Energy Non-Conservation in Quantum Mechanics.Sean M. Carroll & Jackie Lodman - manuscript
    We study the conservation of energy, or lack thereof, when measurements are performed in quantum mechanics. The expectation value of the Hamiltonian of a system can clearly change when wave functions collapse in accordance with the standard textbook (Copenhagen) treatment of quantum measurement, but one might imagine that the change in energy is compensated by the measuring apparatus or environment. We show that this is not true; the change in the energy of a state after measurement can be arbitrarily large, (...)
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  20.  21
    Intentional Faith Communities in Catholic Education: Challenge and Response [Book Review].Sandra Carroll - 2017 - The Australasian Catholic Record 94 (3):372.
    Carroll, Sandra Review of: Intentional faith communities in catholic education: Challenge and response, by Gerald A. Arbuckle, Strathfield, NSW: St Pauls, 2016, pp. 218, $29.95.
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  21.  15
    Parameter-Setting in Second Language Acquisition – Explanans and Explanandum.Susanne E. Carroll - 1996 - Behavioral and Brain Sciences 19 (4):720-721.
  22.  25
    Quantum Mereology: Factorizing Hilbert Space Into Subsystems with Quasi-Classical Dynamics.Sean M. Carroll & Ashmeet Singh - manuscript
    We study the question of how to decompose Hilbert space into a preferred tensor-product factorization without any pre-existing structure other than a Hamiltonian operator, in particular the case of a bipartite decomposition into "system" and "environment." Such a decomposition can be defined by looking for subsystems that exhibit quasi-classical behavior. The correct decomposition is one in which pointer states of the system are relatively robust against environmental monitoring (their entanglement with the environment does not continually and dramatically increase) and remain (...)
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  23. Reality as a Vector in Hilbert Space.Sean M. Carroll -
    I defend the extremist position that the fundamental ontology of the world consists of a vector in Hilbert space evolving according to the Schrödinger equation. The laws of physics are determined solely by the energy eigenspectrum of the Hamiltonian. The structure of our observed world, including space and fields living within it, should arise as a higher-level emergent description. I sketch how this might come about, although much work remains to be done.
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  24. Remarkable Creatures: Epic Adventures in the Search for the Origins of Species.Sean B. Carroll - 2009 - Houghton Mifflin Harcourt.
    An award-wining biologist takes us on the dramatic expeditions that unearthed the history of life on our planet. Just 150 years ago,most of our world was an unexplored wilderness.Our sense of how old it was? Vague and vastly off the mark. And our sense of our own species’ history? A set of fantastic myths and fairy tales. Fossils had been known for millennia, but they were seen as the bones of dragons and other imagined creatures. In the tradition of The (...)
     
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  25. Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime.Sean M. Carroll - 2019 - New York, USA: Dutton.
    A non-technical introduction to quantum mechanics, the Everett interpretation, and the emergence of spacetime.
     
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  26. The Quantum Field Theory on Which the Everyday World Supervenes.Sean M. Carroll - manuscript
    Effective Field Theory (EFT) is the successful paradigm underlying modern theoretical physics, including the "Core Theory" of the Standard Model of particle physics plus Einstein's general relativity. I will argue that EFT grants us a unique insight: each EFT model comes with a built-in specification of its domain of applicability. Hence, once a model is tested within some domain (of energies and interaction strengths), we can be confident that it will continue to be accurate within that domain. Currently, the Core (...)
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  27.  10
    Thinking with Violence.Stuart Carroll - 2017 - History and Theory 56 (4):23-43.
  28.  12
    Worker Deacons.John Francis Collins & Sandra Carroll - 2018 - The Australasian Catholic Record 95 (3):319.
    Collins, John Francis; Carroll, Sandra The publication of the 'Norms for the Formation of Permanent Deacons and Guidelines for the Ministry and Life of Permanent Deacons' by the Australian Catholic Bishops Conference, in August 2016, has renewed focus on the role of permanent deacon. This article uses a heuristic structure to discuss the role of the permanent deacon in the Catholic Church in Australia. It then provides a historical perspective and background on the worker priest movement from the mid-twentieth century (...)
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  29.  27
    Lactation, Nutrition and Fertility and the Secretion of Prolactin and Gonadotrophins in Mopan Mayan Women.A. E. Fink, G. Fink, H. Wilson, J. Bennie, S. Carroll & H. Dick - 1992 - Journal of Biosocial Science 24 (1):35-52.
    The effect of lactation on menstrual cycles, ovulation and conception was studied in a group of non-contracepting Amerindian Mopan Mayan women. Anthropological observations of relevant events were made over a 21-month period. Blood samples were assayed to determine the plasma concentrations of prolactin, luteinising hormone, follicle stimulating hormone, human chorionic gonadotrophin, placental lactogen, oestrogen, progesterone and cortisol. The data show that: frequent and prolonged breast-feeding was associated with a marked increase in plasma prolactin concentrations to levels similar to those in (...)
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  30. Entwined Processes: Rescripting Consent and Strengthening Governance in Genomics Research with Indigenous Communities.Nanibaa’ A. Garrison, Stephanie Russo Carroll & Maui Hudson - 2020 - Journal of Law, Medicine and Ethics 48 (1):218-220.
  31.  13
    Reducing High-Users’ Visits to the Emergency Department by a Primary Care Intervention for the Uninsured: A Retrospective Study.Meng-Han Tsai, Sudha Xirasagar, Scott Carroll, Charles S. Bryan, Pamela J. Gallagher, Kim Davis & Edward C. Jauch - 2018 - Inquiry: The Journal of Health Care Organization, Provision, and Financing 55:004695801876391.
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