When the quantum nature of gravity is taken into account, our conventional notions of space and time are no longer sufficient for structuring our understanding of reality.

By combining quantum information theory, quantum gravity, and philosophy of physics, WOST tries to develop new ways of describing the world — in a sense — without space and without time.

It investigates how the fabric of reality itself arises from quantum phenomena, fundamentally reshaping our understanding of the Universe.

The Consortium

WOST brings together a diverse, international network of researchers, from early-career scientists to established experts, working collaboratively across institutions and continents. The consortium is structured around 2 coordinating hubs and 15 research groups, with over 148 active members worldwide, including 19 affiliated philosophers.

Institute for the Structure of Matter (IEM-CSIC), and Complutense University logo

Institute for the Structure of Matter (IEM-CSIC), and Complutense University

PI · Francesca Vidotto

Hub
Institute for Quantum Optics and Quantum Information logo

Institute for Quantum Optics and Quantum Information

PI · Marios Christodoulou

Hub
Tor Vergata University logo

Tor Vergata University

PI · Flaminia Giacomini

Centre de Physique Théorique, Marseille University logo

Centre de Physique Théorique, Marseille University

PI · Pietro Donà

ETH Zurich logo

ETH Zurich

PI · Renato Renner

Florida Atlantic University logo

Florida Atlantic University

PI · Muxin Han

Lichtenberg Group for History and Philosophy of Physics, Universität Bonn logo

Lichtenberg Group for History and Philosophy of Physics, Universität Bonn

PI · Erik Curiel

Louisiana State University logo

Louisiana State University

PI · Ivan Agullo

Okinawa Institute of Science and Technology, Japan logo

Okinawa Institute of Science and Technology, Japan

PI · Philipp Höhn

Pennsylvania State University logo

Pennsylvania State University

PI · Eugenio Bianchi

Perimeter Institute logo

Perimeter Institute

PI · Lucien Hardy

Quantinuum and the University of Oxford logo

Quantinuum and the University of Oxford

PI · Robin Lorenz

Royal Holloway University of London logo

Royal Holloway University of London

PI · Richard Howl

University College London logo

University College London

PI · Sougato Bose

University of Melbourne logo

University of Melbourne

PI · Lucas Hackl

Université Libre de Bruxelles logo

Université Libre de Bruxelles

PI · Ognyan Oreshkov

Université Paris-Saclay logo

Université Paris-Saclay

PI · Pablo Arrighi

Philosophers Network logo

Philosophers Network

The Team

WOST is led by two young women researchers, supported by a Senior Advisory Scientific Committee and a dedicated Management Team.

Francesca Vidotto

Francesca Vidotto

Leader

Flaminia Giacomini

Flaminia Giacomini

Co-Leader

Senior Advisory Scientific Committee (SASC)

Caslav Brukner

Caslav Brukner

Jeremy Butterfield

Jeremy Butterfield

Bob Coecke

Bob Coecke

Carlo Rovelli

Carlo Rovelli

Chris Smeenk

Chris Smeenk

Management Team

Tommaso De Lorenzo

Tommaso De Lorenzo

Pietro Donà

Pietro Donà

Lucas Hackl

Lucas Hackl

Richard Howl

Richard Howl

Christine Vodovar

Christine Vodovar

Are you a consortium member? Find teams, funding programs, and resources.

Members Portal

Open Opportunities

Browse current openings across the WOST consortium.

  • WOST Postdocs

    Several groups of the WOST consortium announce openings for a total of 12 postdoc positions.
    The review of applications will start on December 1st, 2025 and continue till positions are filled.

    Postdoc
    Apply now
  • Physicist Visiting Program

    This program enables WOST groups to invite external researchers in Physics to visit them and discuss WOST-related topics. The aim is to encourage an exchange of ideas, foster new collaborations, and promote exciting new research directions. Visitors can be master's students, PhD students, postdocs, or professors, and need not be members of the WOST consortium.

    Eligibility

    ✔️ Physicists (WOST members or external researchers)
    ✔️ Must contact the host group Principal Investigator before applying
    ✔️ Expenses will be reimbursed upon reception of receipts after the visit
    For urgent cases, partial reimbursement prior to the visit may be available — contact us.

    Funding Details

    Visits may range from a few weeks to several months. This allocation can support multiple visits and can be combined with other funding sources.

    Covered expenses include but are not limited to:

    • Travel (fares and fees)
    • Accommodation

    First/business class travels are not covered

    Visiting
    Apply now
  • Philosphers Visiting Program

    This program enables WOST groups to invite external researchers in Philosophy to visit them and discuss WOST-related topics. The aim is to encourage an exchange of ideas, foster new collaborations, and promote exciting new research directions at the intersection of philosophy and physics. Visitors can be master's students, PhD students, postdocs, or professors, and need not be members of the WOST consortium.

    Eligibility

    ✔️ Philosophers working on topics relevant to WOST research
    ✔️ Must contact the host group Principal Investigator before applying
    ✔️ Expenses will be reimbursed upon reception of receipts after the visit
    For urgent cases, partial reimbursement prior to the visit may be available — contact us.

    Funding Details

    Visits may range from a few weeks to several months. This allocation can support multiple visits and can be combined with other funding sources.

    Covered expenses include but are not limited to:

    • Travel (fares and fees)
    • Accommodation

    First/business class travels are not covered

    Visiting
    Apply now

Upcoming Events

Seminar Online
Jan 22, 2026 • 15:00 UTC

Why Wigner’s friend matters for quantum gravity

An emerging insight in quantum gravity is that observable quantities gain meaning only when defined relative to explicitly modelled observers. These observers must themselves be physical and, hence, are subject to the laws of quantum theory. On a different front, it has long been understood in quantum foundations that treating observers as quantum systems leads to conceptual challenges, exemplified by Wigner’s friend thought experiments. In my talk, I will show how recent insights from these thought experiments can help clarify questions that arise when incorporating observers into quantum-gravitational scenarios. Related paper: arXiv:2504.03835

Renato Renner
Details coming soon
Workshop
May 03 - 07, 2026

WOST Kick-Off Meeting

Verona, Italy

WOST's leaders will meet up for the official kick-off of the program. Participation by invitation.

School
Aug 31 - 11, 2026

WOST School 2026: Exploring Quantum WithOut SpaceTime

Les Houches, France

The WOST School 2026 introduces early-career researchers to the rapidly developing interface between quantum gravity and quantum information, two fields that have recently begun to converge in surprising and productive ways. In particular, Loop Quantum Gravity provide a natural framework where structures such as spin network states and their evolution can dialogue with the language of quantum information. Participants will explore how quantum-information tools are reshaping our understanding of spacetime—through concepts such as quantum reference frames, quantum clocks, indefinite causal order, and related informational approaches. This will shed new light on gravitational phenomena ranging from black-hole physics to early-universe cosmology, while also learning how emerging table-top experiments may probe quantum-gravity–inspired phenomena such as gravity-mediated entanglement, aiming at testing the quantum nature of gravity. Supported by the international WOST collaboration, the school aims to transmit a growing body of interdisciplinary knowledge not yet part of standard graduate curricula, foster connections across theoretical, experimental, and philosophical perspectives, and cultivate a diverse cohort of young scientists prepared to contribute to this evolving research frontier.

Organizers:

Ivan Agullo, Pablo Arrighi, Eugenio Bianchi, Lin-Qing Chen, Beatriz Elizaga de Navascués, Lucas Hackl, Augustin Vanrietvelde

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