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Des Johnston
  • Home: Academic
    • CV
    • Research
    • Past Research
      • PhD
      • Discretized Models of Random Surfaces
      • Spin Models on Dynamical Random lattices
      • Spin Models on Quenched Random Lattices
      • Spin Models on "Thin" Graphs
      • Balls in Boxes (ZRP)
      • ASEP
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Des Johnston
  • Home: Academic
    • CV
    • Research
    • Past Research
      • PhD
      • Discretized Models of Random Surfaces
      • Spin Models on Dynamical Random lattices
      • Spin Models on Quenched Random Lattices
      • Spin Models on "Thin" Graphs
      • Balls in Boxes (ZRP)
      • ASEP
      • Partition Function Zeroes
      • Log Exponents
      • Invisible States
      • Information Geometry
      • EC Networks
    • Publications
    • Talks
    • Videos
    • Teaching
    • History
  • Home: Personal
    • Views
      • Glen Coe
      • Glen Etive
      • Ben Nevis
      • The Mamores
      • The Grey Corries
      • Loch Lomond and Arrochar
      • Tarf and Tilt
      • Crianlarich and Tyndrum
      • Auchessan
      • Bridge of Orchy
      • The Black Mount
      • Corrour and Loch Ossian
      • Glen Lochay
      • Glen Lyon
      • Glen Doll
      • Ben Lawers
      • Ben Cruachan and Dalmally
      • Culra
      • Dumochter
      • The Mounth
      • Glenshee
      • Cairngorms
      • Braemar
      • Linn of Dee
      • Monadh Liath
      • Laggan
      • Loch Lochy
      • Loch Quoich
      • Loch Cluanie
      • Glen Shiel
      • Loch Maree
      • Glenfinnan
      • Road to the Isles
      • Oban
      • Mallaig
      • Tarbert & Kilmartin Glen
      • Inverary
      • Glen Strathfarrar
      • Achnasheen
      • Bealach na Ba
      • Applecross
      • Torridon and Dundonnell
      • Ullapool
      • Beinn Dearg
      • Easter Ross
      • Assynt
      • Sutherland
      • Scrabster
      • John O'Groats
      • The Black Isle
      • Culloden
      • Stonehaven
      • Arbroath
      • Stirling
      • The Trossachs
      • The Ochils
      • Linlithgow
      • Callander
      • Aberfeldy
      • Comrie
      • Blair Atholl
      • Pitlochry
      • Killiecrankie
      • The Hermitage
      • Dunkeld
      • Crieff
      • Killin
      • Fife
      • Helensburgh
      • Falkirk
      • Heriot-Watt
      • Pentlands
      • Union Canal
      • Dumfries and Galloway
      • The Borders
      • Edinburgh
      • Glasgow
      • Perth
      • Dundee
      • Aberdeen
      • Inverness
      • Skye
      • Mull
      • Arran
      • Bute
      • Islay and Jura
      • Lewis and Harris
      • The Uists and Barra
      • Orkney
      • Northern Irish Views
      • English Views
      • Welsh Views
      • London Views
      • Irish Views
      • French Views
      • German Views
      • Dutch Views
      • Polish Views
      • Hungarian Views
      • Swedish Views
      • Icelandic Views
      • Faroese Views
      • Spanish Views
      • Portuguese Views
      • Greek Views
      • Armenian Views
      • Russian Views
      • New York Views
      • Dallas Fort Worth Views
      • New Haven Views
      • Mystic Views
      • Rhode Island Views
      • Montreal Views
      • Quebec Views
      • Argentinian Views
      • Chilean Views
      • Beijing Views
      • Tianjin Views
      • Shanghai Views
      • Chongqing Views
      • Xi'an Views
      • Chengdu Views
      • Qingdao Views
      • Wuhan Views
      • South Korean Views
      • Senegalese Views
      • Ghanian Views
      • South African Views
      • Jamaican Views
      • Saudi Arabian Views
      • Space Views
    • Bagging
      • Munros
      • Munros Map
      • Corbetts
      • Corbetts Map
      • Fionas/Grahams
      • Fionas/Grahams Map
      • Donalds
      • Donalds Map
      • Scottish Hills
      • Scottish Islands
    • Gadgets
    • Charities
    • Anti-Social
  • More
    • Home: Academic
      • CV
      • Research
      • Past Research
        • PhD
        • Discretized Models of Random Surfaces
        • Spin Models on Dynamical Random lattices
        • Spin Models on Quenched Random Lattices
        • Spin Models on "Thin" Graphs
        • Balls in Boxes (ZRP)
        • ASEP
        • Partition Function Zeroes
        • Log Exponents
        • Invisible States
        • Information Geometry
        • EC Networks
      • Publications
      • Talks
      • Videos
      • Teaching
      • History
    • Home: Personal
      • Views
        • Glen Coe
        • Glen Etive
        • Ben Nevis
        • The Mamores
        • The Grey Corries
        • Loch Lomond and Arrochar
        • Tarf and Tilt
        • Crianlarich and Tyndrum
        • Auchessan
        • Bridge of Orchy
        • The Black Mount
        • Corrour and Loch Ossian
        • Glen Lochay
        • Glen Lyon
        • Glen Doll
        • Ben Lawers
        • Ben Cruachan and Dalmally
        • Culra
        • Dumochter
        • The Mounth
        • Glenshee
        • Cairngorms
        • Braemar
        • Linn of Dee
        • Monadh Liath
        • Laggan
        • Loch Lochy
        • Loch Quoich
        • Loch Cluanie
        • Glen Shiel
        • Loch Maree
        • Glenfinnan
        • Road to the Isles
        • Oban
        • Mallaig
        • Tarbert & Kilmartin Glen
        • Inverary
        • Glen Strathfarrar
        • Achnasheen
        • Bealach na Ba
        • Applecross
        • Torridon and Dundonnell
        • Ullapool
        • Beinn Dearg
        • Easter Ross
        • Assynt
        • Sutherland
        • Scrabster
        • John O'Groats
        • The Black Isle
        • Culloden
        • Stonehaven
        • Arbroath
        • Stirling
        • The Trossachs
        • The Ochils
        • Linlithgow
        • Callander
        • Aberfeldy
        • Comrie
        • Blair Atholl
        • Pitlochry
        • Killiecrankie
        • The Hermitage
        • Dunkeld
        • Crieff
        • Killin
        • Fife
        • Helensburgh
        • Falkirk
        • Heriot-Watt
        • Pentlands
        • Union Canal
        • Dumfries and Galloway
        • The Borders
        • Edinburgh
        • Glasgow
        • Perth
        • Dundee
        • Aberdeen
        • Inverness
        • Skye
        • Mull
        • Arran
        • Bute
        • Islay and Jura
        • Lewis and Harris
        • The Uists and Barra
        • Orkney
        • Northern Irish Views
        • English Views
        • Welsh Views
        • London Views
        • Irish Views
        • French Views
        • German Views
        • Dutch Views
        • Polish Views
        • Hungarian Views
        • Swedish Views
        • Icelandic Views
        • Faroese Views
        • Spanish Views
        • Portuguese Views
        • Greek Views
        • Armenian Views
        • Russian Views
        • New York Views
        • Dallas Fort Worth Views
        • New Haven Views
        • Mystic Views
        • Rhode Island Views
        • Montreal Views
        • Quebec Views
        • Argentinian Views
        • Chilean Views
        • Beijing Views
        • Tianjin Views
        • Shanghai Views
        • Chongqing Views
        • Xi'an Views
        • Chengdu Views
        • Qingdao Views
        • Wuhan Views
        • South Korean Views
        • Senegalese Views
        • Ghanian Views
        • South African Views
        • Jamaican Views
        • Saudi Arabian Views
        • Space Views
      • Bagging
        • Munros
        • Munros Map
        • Corbetts
        • Corbetts Map
        • Fionas/Grahams
        • Fionas/Grahams Map
        • Donalds
        • Donalds Map
        • Scottish Hills
        • Scottish Islands
      • Gadgets
      • Charities
      • Anti-Social

Videos

A talk on YouTube c/o Denjoe O'Connor at DIAS from an online seminar there on 23/03/2023.

  • The 3D Plaquette Ising Model, subsystem symmetries and fractons

A short presentation on a paper in Condensed Matter Physics (Lviv) in a volume in memory of Ralph Kenna 03/10/2024.

  • Statistical Physics and Emergent Behavior: From Spin Models to Cultural Complexity 

Three videos made during the first COVID-19 lockdown in the UK (March-May 2020), largely to experiment with recording on various platforms. They can also be found on this YouTube channel.


  • NBMPS58, Edinburgh, April 2020 The 3D Plaquette Ising Model:From Random Surfaces to Fractons (mp4)
    This commits the cardinal sin of being too long, practice makes perfect. Recorded on a mac with cmd-shift-5.

  • Old - content from way back (2006) Wealth Condensation as a ZRP (mp4)
    This has the considerable merit of being shorter. Recorded on Chrome OS with Screencastify.

  • Prehistoric - content from way, way back (1985) Why (your) mass isn't gauge dependent (mp4)
    Also shorter, which is good. Recorded on Ubuntu (20.04) with Screencastify.

Home:Academic

Home:Personal

E-mail: d.a.johnston(at)hw.ac.uk

Office: S12 Colin Maclaurin Building

Telephone: +44(0)131 451 3255


Department of Mathematics

School of Mathematical & Computer Sciences (MACS)

Heriot-Watt University, Edinburgh, EH14 4AS, UK


Maxwell Institute for Mathematical Sciences 


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