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  1. Article ; Online: Memory and Entropy.

    Rovelli, Carlo

    Entropy (Basel, Switzerland)

    2022  Volume 24, Issue 8

    Abstract: I study the physical nature of traces. Surprisingly, (i) systems separation with (ii) temperature differences and (iii) long thermalization times are sufficient conditions to produce macroscopic traces. Traces of the past are ubiquitous because these ... ...

    Abstract I study the physical nature of traces. Surprisingly, (i) systems separation with (ii) temperature differences and (iii) long thermalization times are sufficient conditions to produce macroscopic traces. Traces of the past are ubiquitous because these conditions are largely satisfied in our universe. I quantify these thermodynamical conditions for memory and derive an expression for the maximum amount of information stored in such memories as a function of the relevant thermodynamical parameters. This mechanism transforms low entropy into available information. I suggest that all macroscopic information has this origin in past low entropy.
    Language English
    Publishing date 2022-07-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2014734-X
    ISSN 1099-4300 ; 1099-4300
    ISSN (online) 1099-4300
    ISSN 1099-4300
    DOI 10.3390/e24081022
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Politics should listen to science, not hide behind it.

    Rovelli, Carlo

    Nature materials

    2021  Volume 20, Issue 2, Page(s) 272

    Language English
    Publishing date 2021-01-04
    Publishing country England
    Document type Journal Article
    ZDB-ID 2088679-2
    ISSN 1476-4660 ; 1476-1122
    ISSN (online) 1476-4660
    ISSN 1476-1122
    DOI 10.1038/s41563-020-00891-3
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  3. Article ; Online: Where Was Past Low-Entropy?

    Rovelli, Carlo

    Entropy (Basel, Switzerland)

    2019  Volume 21, Issue 5

    Abstract: Where was the past low-entropy of the early universe located? Contrary to some popular answers, I argue that that the dominant source of low-entropy is the fact that a single degree of freedom, the scale factor, was not at equilibrium. I also discuss ... ...

    Abstract Where was the past low-entropy of the early universe located? Contrary to some popular answers, I argue that that the dominant source of low-entropy is the fact that a single degree of freedom, the scale factor, was not at equilibrium. I also discuss possible interpretations of the "improbability" of this early low-entropy.
    Language English
    Publishing date 2019-05-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2014734-X
    ISSN 1099-4300 ; 1099-4300
    ISSN (online) 1099-4300
    ISSN 1099-4300
    DOI 10.3390/e21050466
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: 'Space is blue and birds fly through it'.

    Rovelli, Carlo

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

    2018  Volume 376, Issue 2123

    Abstract: Quantum mechanics is not about 'quantum states': it is about values of physical variables. I give a short fresh presentation and update on ... ...

    Abstract Quantum mechanics is not about 'quantum states': it is about values of physical variables. I give a short fresh presentation and update on the
    Language English
    Publishing date 2018-04-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 208381-4
    ISSN 1471-2962 ; 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    ISSN (online) 1471-2962
    ISSN 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    DOI 10.1098/rsta.2017.0312
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    In stock of ZB MED Bonn / Germany

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  5. Article: Relational Quantum Mechanics is About Facts, Not States: A Reply to Pienaar and Brukner.

    Biagio, Andrea Di / Rovelli, Carlo

    Foundations of physics

    2022  Volume 52, Issue 3, Page(s) 62

    Abstract: In recent works, Časlav Brukner and Jacques Pienaar have raised interesting objections to the relational interpretation of quantum mechanics. We answer these objections in detail and show that, far from questioning the viability of the interpretation, ... ...

    Abstract In recent works, Časlav Brukner and Jacques Pienaar have raised interesting objections to the relational interpretation of quantum mechanics. We answer these objections in detail and show that, far from questioning the viability of the interpretation, they sharpen and clarify it.
    Language English
    Publishing date 2022-06-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1470577-1
    ISSN 1572-9516 ; 0015-9018
    ISSN (online) 1572-9516
    ISSN 0015-9018
    DOI 10.1007/s10701-022-00579-5
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  6. Article ; Online: Put defence money into planetary emergencies, urge Nobel winners.

    Smerlak, Matteo / Rovelli, Carlo

    Nature

    2022  Volume 601, Issue 7893, Page(s) 318

    Language English
    Publishing date 2022-01-18
    Publishing country England
    Document type Letter
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/d41586-022-00096-5
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
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    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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  7. Article: On the consistency of relative facts.

    Cavalcanti, Eric G / Di Biagio, Andrea / Rovelli, Carlo

    European journal for philosophy of science

    2023  Volume 13, Issue 4, Page(s) 55

    Abstract: Lawrence et al. have presented an argument purporting to show that "relative facts do not exist" and, consequently, "Relational Quantum Mechanics is incompatible with quantum mechanics". The argument is based on a GHZ-like contradiction between ... ...

    Abstract Lawrence et al. have presented an argument purporting to show that "relative facts do not exist" and, consequently, "Relational Quantum Mechanics is incompatible with quantum mechanics". The argument is based on a GHZ-like contradiction between constraints satisfied by measurement outcomes in an extended Wigner's friend scenario. Here we present a strengthened version of the argument, and show why, contrary to the claim by Lawrence et al., these arguments do not contradict the consistency of a theory of relative facts. Rather, considering this argument helps clarify how one should
    Language English
    Publishing date 2023-11-22
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2607264-6
    ISSN 1879-4920 ; 1879-4912
    ISSN (online) 1879-4920
    ISSN 1879-4912
    DOI 10.1007/s13194-023-00551-8
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  8. Article ; Online: Prevention and treatment of recurrent cellulitis.

    Peghin, Maddalena / Graziano, Elena / Rovelli, Cristina / Grossi, Paolo Antonio

    Current opinion in infectious diseases

    2023  Volume 36, Issue 2, Page(s) 95–101

    Abstract: Purpose of review: Recurrent cellulitis is a challenging clinical condition affecting up to 47% of patients after the first episode, especially those with predisposing risk factors. The purpose of this review is to describe the state of the art of ... ...

    Abstract Purpose of review: Recurrent cellulitis is a challenging clinical condition affecting up to 47% of patients after the first episode, especially those with predisposing risk factors. The purpose of this review is to describe the state of the art of literature evidence and to highlight recent developments in its management.
    Recent findings: Recurrent cellulitis can occur after successful treatment of cellulitis. Conditions that commonly increase the risk of cellulitis include local and systemic modifiable and nonmodifiable factors. A rigorous approach to the management of risk factors and treatment of acute infection is important as the risk of recurrence rises with repeated episodes. Risk factors, if present, need to be targeted in association with antibiotic prophylaxis. Penicillin V is the preferred antibiotic for prevention but other antibiotics and new drugs can be considered in cases of β-lactam allergy, intolerance, or failure.
    Summary: Recurrent cellulitis is associated with short term and long-term morbidity as well as significant healthcare costs. Management of underlying predisposing conditions is crucial to prevent recurrence in addition with evaluation of pharmacological measures, but specialized and multidisciplinary skills are needed. More efforts are needed to prevent and treat this underestimated problem.
    MeSH term(s) Humans ; Cellulitis/drug therapy ; Cellulitis/prevention & control ; Anti-Bacterial Agents/therapeutic use ; Antibiotic Prophylaxis ; Penicillin V/therapeutic use ; Secondary Prevention ; Chronic Disease ; Recurrence
    Chemical Substances Anti-Bacterial Agents ; Penicillin V (Z61I075U2W)
    Language English
    Publishing date 2023-02-09
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 645085-4
    ISSN 1473-6527 ; 1535-3877 ; 0951-7375 ; 1355-834X
    ISSN (online) 1473-6527 ; 1535-3877
    ISSN 0951-7375 ; 1355-834X
    DOI 10.1097/QCO.0000000000000903
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2462: Show issues Location:
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  9. Article ; Online: Transitions in Brain Evolution: Space, Time and Entropy.

    Jeffery, Kate J / Rovelli, Carlo

    Trends in neurosciences

    2020  Volume 43, Issue 7, Page(s) 467–474

    Abstract: How did brains evolve to become so complex, and what is their future? Brains pose an explanatory challenge because entropy, which inexorably increases over time, is commonly associated with disorder and simplicity. Recently we showed how evolution is an ... ...

    Abstract How did brains evolve to become so complex, and what is their future? Brains pose an explanatory challenge because entropy, which inexorably increases over time, is commonly associated with disorder and simplicity. Recently we showed how evolution is an entropic process, building structures - organisms - which themselves facilitate entropy growth. Here we suggest that key transitional points in evolution extended organisms' reach into space and time, opening channels into new regions of a complex multidimensional state space that also allow entropy to increase. Brain evolution enabled representation of space and time, which vastly enhances this process. Some of these channels lead to tiny, dead-ends in the state space: the persistence of complex life is thus not thermodynamically guaranteed.
    MeSH term(s) Brain ; Entropy ; Humans
    Keywords covid19
    Language English
    Publishing date 2020-04-27
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 282488-7
    ISSN 1878-108X ; 0378-5912 ; 0166-2236
    ISSN (online) 1878-108X
    ISSN 0378-5912 ; 0166-2236
    DOI 10.1016/j.tins.2020.04.008
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1442: Show issues Location:
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  10. Article ; Online: History: Don't glorify Arab astronomy.

    Rovelli, Carlo

    Nature

    2013  Volume 499, Issue 7457, Page(s) 154

    Language English
    Publishing date 2013-07-12
    Publishing country England
    Document type Comment ; Letter
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/499154a
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
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